The area of the circle is 25. What is the circumference of the circle? code example
Example 1: area and circumference of a circle
#include <stdio.h>
#define PI 3.142
int main(){
float r, C, A;
printf("What is the radius: \n");
scanf("%f", &r);
C = 2 * PI * r;
A = PI * r * r;
printf("\nCincumference is and %f Area is %f\n", C, A);
}
Example 2: how to find circumference of a circle
curcomfrance = pi * radius * 2