题解 | #牛牛的圆#
牛牛的圆
https://www.nowcoder.com/practice/75a202e826d048a39824ec694b5ce7e3
#include<stdio.h> int main() { int r = 0; scanf("%d", &r); float s = 3.14 * r * r; printf("%.2f", s); return 0; }
牛牛的圆
https://www.nowcoder.com/practice/75a202e826d048a39824ec694b5ce7e3
#include<stdio.h> int main() { int r = 0; scanf("%d", &r); float s = 3.14 * r * r; printf("%.2f", s); return 0; }
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