请问一下各位大神，我这哪里错了，输出的结果有问题。。
#define PI 3.1415926#include<stdio.h>
#include<math.h>
int main()
{
double r, h, s1, s2, s3, s4, s5;
scanf("r=%lf,h=%lf", &r, &h);
s1 = 2 * PI*r;
s2 = PI*pow(r, 2);
s3 = 4 * PI*(r, 2);
s4 = (4 * PI*(r, 3))/3;
s5 = h*PI*(r, 2);
printf("圆周长=%5.2f\n圆面积=%5.2f\n圆球的表面积=%5.2f\n圆球的体积=%5.2f\n圆柱的体积=%5.2f\n",s1,s2,s3,s4,s5);
return 0;
}
