题解 | #牛牛的圆#
牛牛的圆
http://www.nowcoder.com/practice/75a202e826d048a39824ec694b5ce7e3
BC37 牛牛的圆
思路:
step1:输入半径;算出面积并打印;
代码如下:
r = int(input())
print(3.14*r**2)
牛牛的圆
http://www.nowcoder.com/practice/75a202e826d048a39824ec694b5ce7e3
r = int(input())
print(3.14*r**2)
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