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