""" 输入半径计算圆的周长和面积 Version: 0.1 Author: 骆昊 Date: 2018-02-27 """ import math radius = float(input('请输入圆的半径: ')) perimeter = 2 * math.pi * radius area = math.pi * radius * radius print('周长: %.2f' % perimeter) print('面积: %.2f' % area)
