14 lines
315 B
Python
14 lines
315 B
Python
import math
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def circle_area(radius: float):
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"""Calculate the area of a circle
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:param radius: circle radius
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:raises ValueError: radius is negative
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:return: area of the circle
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"""
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if radius < 0:
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raise ValueError("Circle can't have negative radius")
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return math.pi * radius ** 2
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