#给一个半径,求圆的面积和周长,圆周率3.14 r = int(input('r=')) print('area='+str(3.14*r*r)) print('circumference='+str(2*3.14*r)) 相关文章: 2021-08-09 2021-04-12 2021-07-09 2022-01-10 2021-08-22 2022-12-23 2022-12-23