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585 lines
19 KiB
Python
585 lines
19 KiB
Python
"""
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Find the area of various geometric shapes
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Wikipedia reference: https://en.wikipedia.org/wiki/Area
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"""
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from math import pi, sqrt, tan
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def surface_area_cube(side_length: float) -> float:
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"""
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Calculate the Surface Area of a Cube.
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>>> surface_area_cube(1)
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6
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>>> surface_area_cube(1.6)
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15.360000000000003
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>>> surface_area_cube(0)
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0
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>>> surface_area_cube(3)
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54
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>>> surface_area_cube(-1)
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Traceback (most recent call last):
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...
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ValueError: surface_area_cube() only accepts non-negative values
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"""
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if side_length < 0:
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raise ValueError("surface_area_cube() only accepts non-negative values")
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return 6 * side_length**2
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def surface_area_cuboid(length: float, breadth: float, height: float) -> float:
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"""
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Calculate the Surface Area of a Cuboid.
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>>> surface_area_cuboid(1, 2, 3)
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22
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>>> surface_area_cuboid(0, 0, 0)
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0
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>>> surface_area_cuboid(1.6, 2.6, 3.6)
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38.56
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>>> surface_area_cuboid(-1, 2, 3)
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Traceback (most recent call last):
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...
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ValueError: surface_area_cuboid() only accepts non-negative values
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>>> surface_area_cuboid(1, -2, 3)
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Traceback (most recent call last):
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...
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ValueError: surface_area_cuboid() only accepts non-negative values
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>>> surface_area_cuboid(1, 2, -3)
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Traceback (most recent call last):
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...
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ValueError: surface_area_cuboid() only accepts non-negative values
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"""
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if length < 0 or breadth < 0 or height < 0:
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raise ValueError("surface_area_cuboid() only accepts non-negative values")
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return 2 * ((length * breadth) + (breadth * height) + (length * height))
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def surface_area_sphere(radius: float) -> float:
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"""
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Calculate the Surface Area of a Sphere.
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Wikipedia reference: https://en.wikipedia.org/wiki/Sphere
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Formula: 4 * pi * r^2
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>>> surface_area_sphere(5)
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314.1592653589793
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>>> surface_area_sphere(1)
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12.566370614359172
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>>> surface_area_sphere(1.6)
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32.169908772759484
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>>> surface_area_sphere(0)
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0.0
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>>> surface_area_sphere(-1)
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Traceback (most recent call last):
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...
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ValueError: surface_area_sphere() only accepts non-negative values
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"""
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if radius < 0:
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raise ValueError("surface_area_sphere() only accepts non-negative values")
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return 4 * pi * radius**2
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def surface_area_hemisphere(radius: float) -> float:
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"""
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Calculate the Surface Area of a Hemisphere.
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Formula: 3 * pi * r^2
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>>> surface_area_hemisphere(5)
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235.61944901923448
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>>> surface_area_hemisphere(1)
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9.42477796076938
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>>> surface_area_hemisphere(0)
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0.0
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>>> surface_area_hemisphere(1.1)
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11.40398133253095
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>>> surface_area_hemisphere(-1)
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Traceback (most recent call last):
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...
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ValueError: surface_area_hemisphere() only accepts non-negative values
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"""
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if radius < 0:
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raise ValueError("surface_area_hemisphere() only accepts non-negative values")
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return 3 * pi * radius**2
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def surface_area_cone(radius: float, height: float) -> float:
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"""
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Calculate the Surface Area of a Cone.
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Wikipedia reference: https://en.wikipedia.org/wiki/Cone
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Formula: pi * r * (r + (h ** 2 + r ** 2) ** 0.5)
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>>> surface_area_cone(10, 24)
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1130.9733552923256
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>>> surface_area_cone(6, 8)
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301.59289474462014
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>>> surface_area_cone(1.6, 2.6)
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23.387862992395807
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>>> surface_area_cone(0, 0)
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0.0
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>>> surface_area_cone(-1, -2)
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Traceback (most recent call last):
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...
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ValueError: surface_area_cone() only accepts non-negative values
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>>> surface_area_cone(1, -2)
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Traceback (most recent call last):
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...
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ValueError: surface_area_cone() only accepts non-negative values
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>>> surface_area_cone(-1, 2)
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Traceback (most recent call last):
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...
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ValueError: surface_area_cone() only accepts non-negative values
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"""
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if radius < 0 or height < 0:
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raise ValueError("surface_area_cone() only accepts non-negative values")
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return pi * radius * (radius + (height**2 + radius**2) ** 0.5)
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def surface_area_conical_frustum(
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radius_1: float, radius_2: float, height: float
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) -> float:
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"""
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Calculate the Surface Area of a Conical Frustum.
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>>> surface_area_conical_frustum(1, 2, 3)
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45.511728065337266
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>>> surface_area_conical_frustum(4, 5, 6)
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300.7913575056268
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>>> surface_area_conical_frustum(0, 0, 0)
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0.0
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>>> surface_area_conical_frustum(1.6, 2.6, 3.6)
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78.57907060751548
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>>> surface_area_conical_frustum(-1, 2, 3)
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Traceback (most recent call last):
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...
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ValueError: surface_area_conical_frustum() only accepts non-negative values
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>>> surface_area_conical_frustum(1, -2, 3)
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Traceback (most recent call last):
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...
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ValueError: surface_area_conical_frustum() only accepts non-negative values
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>>> surface_area_conical_frustum(1, 2, -3)
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Traceback (most recent call last):
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...
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ValueError: surface_area_conical_frustum() only accepts non-negative values
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"""
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if radius_1 < 0 or radius_2 < 0 or height < 0:
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raise ValueError(
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"surface_area_conical_frustum() only accepts non-negative values"
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)
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slant_height = (height**2 + (radius_1 - radius_2) ** 2) ** 0.5
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return pi * ((slant_height * (radius_1 + radius_2)) + radius_1**2 + radius_2**2)
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def surface_area_cylinder(radius: float, height: float) -> float:
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"""
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Calculate the Surface Area of a Cylinder.
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Wikipedia reference: https://en.wikipedia.org/wiki/Cylinder
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Formula: 2 * pi * r * (h + r)
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>>> surface_area_cylinder(7, 10)
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747.6990515543707
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>>> surface_area_cylinder(1.6, 2.6)
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42.22300526424682
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>>> surface_area_cylinder(0, 0)
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0.0
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>>> surface_area_cylinder(6, 8)
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527.7875658030853
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>>> surface_area_cylinder(-1, -2)
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Traceback (most recent call last):
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...
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ValueError: surface_area_cylinder() only accepts non-negative values
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>>> surface_area_cylinder(1, -2)
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Traceback (most recent call last):
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...
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ValueError: surface_area_cylinder() only accepts non-negative values
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>>> surface_area_cylinder(-1, 2)
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Traceback (most recent call last):
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...
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ValueError: surface_area_cylinder() only accepts non-negative values
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"""
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if radius < 0 or height < 0:
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raise ValueError("surface_area_cylinder() only accepts non-negative values")
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return 2 * pi * radius * (height + radius)
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def surface_area_torus(torus_radius: float, tube_radius: float) -> float:
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"""Calculate the Area of a Torus.
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Wikipedia reference: https://en.wikipedia.org/wiki/Torus
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:return 4pi^2 * torus_radius * tube_radius
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>>> surface_area_torus(1, 1)
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39.47841760435743
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>>> surface_area_torus(4, 3)
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473.7410112522892
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>>> surface_area_torus(3, 4)
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Traceback (most recent call last):
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...
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ValueError: surface_area_torus() does not support spindle or self intersecting tori
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>>> surface_area_torus(1.6, 1.6)
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101.06474906715503
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>>> surface_area_torus(0, 0)
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0.0
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>>> surface_area_torus(-1, 1)
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Traceback (most recent call last):
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...
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ValueError: surface_area_torus() only accepts non-negative values
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>>> surface_area_torus(1, -1)
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Traceback (most recent call last):
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...
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ValueError: surface_area_torus() only accepts non-negative values
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"""
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if torus_radius < 0 or tube_radius < 0:
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raise ValueError("surface_area_torus() only accepts non-negative values")
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if torus_radius < tube_radius:
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raise ValueError(
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"surface_area_torus() does not support spindle or self intersecting tori"
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)
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return 4 * pow(pi, 2) * torus_radius * tube_radius
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def area_rectangle(length: float, width: float) -> float:
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"""
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Calculate the area of a rectangle.
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>>> area_rectangle(10, 20)
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200
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>>> area_rectangle(1.6, 2.6)
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4.16
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>>> area_rectangle(0, 0)
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0
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>>> area_rectangle(-1, -2)
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Traceback (most recent call last):
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...
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ValueError: area_rectangle() only accepts non-negative values
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>>> area_rectangle(1, -2)
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Traceback (most recent call last):
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...
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ValueError: area_rectangle() only accepts non-negative values
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>>> area_rectangle(-1, 2)
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Traceback (most recent call last):
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...
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ValueError: area_rectangle() only accepts non-negative values
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"""
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if length < 0 or width < 0:
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raise ValueError("area_rectangle() only accepts non-negative values")
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return length * width
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def area_square(side_length: float) -> float:
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"""
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Calculate the area of a square.
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>>> area_square(10)
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100
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>>> area_square(0)
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0
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>>> area_square(1.6)
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2.5600000000000005
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>>> area_square(-1)
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Traceback (most recent call last):
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...
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ValueError: area_square() only accepts non-negative values
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"""
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if side_length < 0:
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raise ValueError("area_square() only accepts non-negative values")
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return side_length**2
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def area_triangle(base: float, height: float) -> float:
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"""
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Calculate the area of a triangle given the base and height.
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>>> area_triangle(10, 10)
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50.0
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>>> area_triangle(1.6, 2.6)
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2.08
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>>> area_triangle(0, 0)
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0.0
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>>> area_triangle(-1, -2)
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Traceback (most recent call last):
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...
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ValueError: area_triangle() only accepts non-negative values
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>>> area_triangle(1, -2)
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Traceback (most recent call last):
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...
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ValueError: area_triangle() only accepts non-negative values
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>>> area_triangle(-1, 2)
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Traceback (most recent call last):
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...
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ValueError: area_triangle() only accepts non-negative values
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"""
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if base < 0 or height < 0:
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raise ValueError("area_triangle() only accepts non-negative values")
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return (base * height) / 2
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def area_triangle_three_sides(side1: float, side2: float, side3: float) -> float:
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"""
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Calculate area of triangle when the length of 3 sides are known.
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This function uses Heron's formula: https://en.wikipedia.org/wiki/Heron%27s_formula
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>>> area_triangle_three_sides(5, 12, 13)
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30.0
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>>> area_triangle_three_sides(10, 11, 12)
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51.521233486786784
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>>> area_triangle_three_sides(0, 0, 0)
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0.0
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>>> area_triangle_three_sides(1.6, 2.6, 3.6)
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1.8703742940919619
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>>> area_triangle_three_sides(-1, -2, -1)
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Traceback (most recent call last):
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...
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ValueError: area_triangle_three_sides() only accepts non-negative values
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>>> area_triangle_three_sides(1, -2, 1)
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Traceback (most recent call last):
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...
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ValueError: area_triangle_three_sides() only accepts non-negative values
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>>> area_triangle_three_sides(2, 4, 7)
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Traceback (most recent call last):
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...
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ValueError: Given three sides do not form a triangle
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>>> area_triangle_three_sides(2, 7, 4)
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Traceback (most recent call last):
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...
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ValueError: Given three sides do not form a triangle
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>>> area_triangle_three_sides(7, 2, 4)
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Traceback (most recent call last):
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...
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ValueError: Given three sides do not form a triangle
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"""
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if side1 < 0 or side2 < 0 or side3 < 0:
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raise ValueError("area_triangle_three_sides() only accepts non-negative values")
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elif side1 + side2 < side3 or side1 + side3 < side2 or side2 + side3 < side1:
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raise ValueError("Given three sides do not form a triangle")
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semi_perimeter = (side1 + side2 + side3) / 2
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area = sqrt(
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semi_perimeter
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* (semi_perimeter - side1)
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* (semi_perimeter - side2)
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* (semi_perimeter - side3)
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)
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return area
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def area_parallelogram(base: float, height: float) -> float:
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"""
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Calculate the area of a parallelogram.
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>>> area_parallelogram(10, 20)
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200
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>>> area_parallelogram(1.6, 2.6)
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4.16
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>>> area_parallelogram(0, 0)
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0
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>>> area_parallelogram(-1, -2)
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Traceback (most recent call last):
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...
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ValueError: area_parallelogram() only accepts non-negative values
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>>> area_parallelogram(1, -2)
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Traceback (most recent call last):
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...
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ValueError: area_parallelogram() only accepts non-negative values
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>>> area_parallelogram(-1, 2)
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Traceback (most recent call last):
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...
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ValueError: area_parallelogram() only accepts non-negative values
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"""
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if base < 0 or height < 0:
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raise ValueError("area_parallelogram() only accepts non-negative values")
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return base * height
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def area_trapezium(base1: float, base2: float, height: float) -> float:
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"""
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Calculate the area of a trapezium.
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>>> area_trapezium(10, 20, 30)
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450.0
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>>> area_trapezium(1.6, 2.6, 3.6)
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7.5600000000000005
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>>> area_trapezium(0, 0, 0)
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0.0
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>>> area_trapezium(-1, -2, -3)
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Traceback (most recent call last):
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...
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ValueError: area_trapezium() only accepts non-negative values
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>>> area_trapezium(-1, 2, 3)
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Traceback (most recent call last):
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...
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ValueError: area_trapezium() only accepts non-negative values
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>>> area_trapezium(1, -2, 3)
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Traceback (most recent call last):
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...
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ValueError: area_trapezium() only accepts non-negative values
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>>> area_trapezium(1, 2, -3)
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Traceback (most recent call last):
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...
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ValueError: area_trapezium() only accepts non-negative values
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>>> area_trapezium(-1, -2, 3)
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Traceback (most recent call last):
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...
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ValueError: area_trapezium() only accepts non-negative values
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>>> area_trapezium(1, -2, -3)
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Traceback (most recent call last):
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...
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ValueError: area_trapezium() only accepts non-negative values
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>>> area_trapezium(-1, 2, -3)
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Traceback (most recent call last):
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...
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ValueError: area_trapezium() only accepts non-negative values
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"""
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if base1 < 0 or base2 < 0 or height < 0:
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raise ValueError("area_trapezium() only accepts non-negative values")
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return 1 / 2 * (base1 + base2) * height
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def area_circle(radius: float) -> float:
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"""
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Calculate the area of a circle.
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>>> area_circle(20)
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1256.6370614359173
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>>> area_circle(1.6)
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8.042477193189871
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>>> area_circle(0)
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0.0
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>>> area_circle(-1)
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Traceback (most recent call last):
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...
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ValueError: area_circle() only accepts non-negative values
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"""
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if radius < 0:
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raise ValueError("area_circle() only accepts non-negative values")
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return pi * radius**2
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def area_ellipse(radius_x: float, radius_y: float) -> float:
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"""
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Calculate the area of a ellipse.
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>>> area_ellipse(10, 10)
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314.1592653589793
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>>> area_ellipse(10, 20)
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628.3185307179587
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>>> area_ellipse(0, 0)
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0.0
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>>> area_ellipse(1.6, 2.6)
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13.06902543893354
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>>> area_ellipse(-10, 20)
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Traceback (most recent call last):
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...
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ValueError: area_ellipse() only accepts non-negative values
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>>> area_ellipse(10, -20)
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Traceback (most recent call last):
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...
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ValueError: area_ellipse() only accepts non-negative values
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>>> area_ellipse(-10, -20)
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Traceback (most recent call last):
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...
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ValueError: area_ellipse() only accepts non-negative values
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"""
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if radius_x < 0 or radius_y < 0:
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raise ValueError("area_ellipse() only accepts non-negative values")
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return pi * radius_x * radius_y
|
|
|
|
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def area_rhombus(diagonal_1: float, diagonal_2: float) -> float:
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"""
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|
Calculate the area of a rhombus.
|
|
|
|
>>> area_rhombus(10, 20)
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100.0
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|
>>> area_rhombus(1.6, 2.6)
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|
2.08
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|
>>> area_rhombus(0, 0)
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|
0.0
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|
>>> area_rhombus(-1, -2)
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|
Traceback (most recent call last):
|
|
...
|
|
ValueError: area_rhombus() only accepts non-negative values
|
|
>>> area_rhombus(1, -2)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: area_rhombus() only accepts non-negative values
|
|
>>> area_rhombus(-1, 2)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: area_rhombus() only accepts non-negative values
|
|
"""
|
|
if diagonal_1 < 0 or diagonal_2 < 0:
|
|
raise ValueError("area_rhombus() only accepts non-negative values")
|
|
return 1 / 2 * diagonal_1 * diagonal_2
|
|
|
|
|
|
def area_reg_polygon(sides: int, length: float) -> float:
|
|
"""
|
|
Calculate the area of a regular polygon.
|
|
Wikipedia reference: https://en.wikipedia.org/wiki/Polygon#Regular_polygons
|
|
Formula: (n*s^2*cot(pi/n))/4
|
|
|
|
>>> area_reg_polygon(3, 10)
|
|
43.301270189221945
|
|
>>> area_reg_polygon(4, 10)
|
|
100.00000000000001
|
|
>>> area_reg_polygon(0, 0)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: area_reg_polygon() only accepts integers greater than or equal to \
|
|
three as number of sides
|
|
>>> area_reg_polygon(-1, -2)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: area_reg_polygon() only accepts integers greater than or equal to \
|
|
three as number of sides
|
|
>>> area_reg_polygon(5, -2)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: area_reg_polygon() only accepts non-negative values as \
|
|
length of a side
|
|
>>> area_reg_polygon(-1, 2)
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: area_reg_polygon() only accepts integers greater than or equal to \
|
|
three as number of sides
|
|
"""
|
|
if not isinstance(sides, int) or sides < 3:
|
|
raise ValueError(
|
|
"area_reg_polygon() only accepts integers greater than or \
|
|
equal to three as number of sides"
|
|
)
|
|
elif length < 0:
|
|
raise ValueError(
|
|
"area_reg_polygon() only accepts non-negative values as \
|
|
length of a side"
|
|
)
|
|
return (sides * length**2) / (4 * tan(pi / sides))
|
|
return (sides * length**2) / (4 * tan(pi / sides))
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import doctest
|
|
|
|
doctest.testmod(verbose=True) # verbose so we can see methods missing tests
|
|
|
|
print("[DEMO] Areas of various geometric shapes: \n")
|
|
print(f"Rectangle: {area_rectangle(10, 20) = }")
|
|
print(f"Square: {area_square(10) = }")
|
|
print(f"Triangle: {area_triangle(10, 10) = }")
|
|
print(f"Triangle: {area_triangle_three_sides(5, 12, 13) = }")
|
|
print(f"Parallelogram: {area_parallelogram(10, 20) = }")
|
|
print(f"Rhombus: {area_rhombus(10, 20) = }")
|
|
print(f"Trapezium: {area_trapezium(10, 20, 30) = }")
|
|
print(f"Circle: {area_circle(20) = }")
|
|
print(f"Ellipse: {area_ellipse(10, 20) = }")
|
|
print("\nSurface Areas of various geometric shapes: \n")
|
|
print(f"Cube: {surface_area_cube(20) = }")
|
|
print(f"Cuboid: {surface_area_cuboid(10, 20, 30) = }")
|
|
print(f"Sphere: {surface_area_sphere(20) = }")
|
|
print(f"Hemisphere: {surface_area_hemisphere(20) = }")
|
|
print(f"Cone: {surface_area_cone(10, 20) = }")
|
|
print(f"Conical Frustum: {surface_area_conical_frustum(10, 20, 30) = }")
|
|
print(f"Cylinder: {surface_area_cylinder(10, 20) = }")
|
|
print(f"Torus: {surface_area_torus(20, 10) = }")
|
|
print(f"Equilateral Triangle: {area_reg_polygon(3, 10) = }")
|
|
print(f"Square: {area_reg_polygon(4, 10) = }")
|
|
print(f"Reqular Pentagon: {area_reg_polygon(5, 10) = }")
|