C Program to Find Volume and Surface Area of Sphere

/*
 * C Program to Find Volume and Surface Area of Sphere
 */
 #include <stdio.h>
#include <math.h>
 
int main()
{
 
    float radius;
    float surface_area, volume;
 
    printf("Enter radius of the sphere : \n");
    scanf("%f", &radius);
    surface_area =  4 * (22/7) * radius * radius;
    volume = (4.0/3) * (22/7) * radius * radius * radius;
    printf("Surface area of sphere is: %.3f", surface_area);
    printf("\n Volume of sphere is : %.3f", volume);
    return 0;
}

 
Output:

Enter radius of the sphere :
40
Surface area of sphere is: 19200.000
Volume of sphere is : 256000.000