CoCalc -- circle.py

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GitHub Repository: jackfrued/Python-100-Days
Path: blob/master/Day01-15/code/Day02/circle.py
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"""
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输入半径计算圆的周长和面积
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Version: 0.1
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Author: 骆昊
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Date: 2018-02-27
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"""
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import math
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radius = float(input('请输入圆的半径: '))
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perimeter = 2 * math.pi * radius
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area = math.pi * radius * radius
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print('周长: %.2f' % perimeter)
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print('面积: %.2f' % area)
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