Exercise2

#include <stdlib.h>
#include <math.h>
static float pi = atan(1)*4;
int main(){
    float r, v, s;
    printf("Radius: ");
    scanf("%f", &r);
    s = 4 * pi * pow(r, 2); // sahe
    v = (3 * pi * pow(r, 3))/4; // hecm
    printf("Area: %f", s);
    printf("\nVolume: %f\n", v);
    system("pause");
}