#include <stdio.h>
int main () 
{
    double r,t,s,o;
    o = 3.14;
    printf("请输入圆的半径\n");
    scanf("%lf",&r);
    t = 4 * o * r * r;
    s = (t * r) / 3;
    printf("圆的面积为%lf\n圆的体积为%lf",t,s);
    return 0;
}