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74 lines
2.1 KiB
Python
74 lines
2.1 KiB
Python
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# dodecahedron.py
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"""
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A regular dodecahedron is a three-dimensional figure made up of
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12 pentagon faces having the same equal size.
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"""
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def dodecahedron_surface_area(edge: float) -> float:
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"""
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Calculates the surface area of a regular dodecahedron
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a = 3 * ((25 + 10 * (5** (1 / 2))) ** (1 / 2 )) * (e**2)
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where:
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a --> is the area of the dodecahedron
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e --> is the length of the edge
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reference-->"Dodecahedron" Study.com
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<https://study.com/academy/lesson/dodecahedron-volume-surface-area-formulas.html>
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:param edge: length of the edge of the dodecahedron
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:type edge: float
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:return: the surface area of the dodecahedron as a float
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Tests:
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>>> dodecahedron_surface_area(5)
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516.1432201766901
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>>> dodecahedron_surface_area(10)
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2064.5728807067603
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>>> dodecahedron_surface_area(-1)
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Traceback (most recent call last):
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...
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ValueError: Length must be a positive.
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"""
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if edge <= 0 or not isinstance(edge, int):
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raise ValueError("Length must be a positive.")
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return 3 * ((25 + 10 * (5 ** (1 / 2))) ** (1 / 2)) * (edge**2)
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def dodecahedron_volume(edge: float) -> float:
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"""
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Calculates the volume of a regular dodecahedron
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v = ((15 + (7 * (5** (1 / 2)))) / 4) * (e**3)
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where:
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v --> is the volume of the dodecahedron
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e --> is the length of the edge
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reference-->"Dodecahedron" Study.com
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<https://study.com/academy/lesson/dodecahedron-volume-surface-area-formulas.html>
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:param edge: length of the edge of the dodecahedron
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:type edge: float
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:return: the volume of the dodecahedron as a float
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Tests:
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>>> dodecahedron_volume(5)
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957.8898700780791
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>>> dodecahedron_volume(10)
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7663.118960624633
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>>> dodecahedron_volume(-1)
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Traceback (most recent call last):
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...
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ValueError: Length must be a positive.
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"""
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if edge <= 0 or not isinstance(edge, int):
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raise ValueError("Length must be a positive.")
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return ((15 + (7 * (5 ** (1 / 2)))) / 4) * (edge**3)
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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