Wap in C to define value of pi and find radius

Define value of pi and find radius

Dear Student here you learn How to find Define value of pi and find radius using C, Here we only provide a demo for your Understanding, now try it in your Way.

Wap in C to find Radius of Circle

#include <stdio.h>
#define pi 3.14
int main()
{

int r;
float area,result;
printf("Enter radius = ");
scanf("%d",&r);
area=pi*r*r;
result=area/1000000;
printf(" Area = %f",area);
printf("\n The area is equal to %fKm²", result);
return result;
}

Output

2nd Run (Now Input the Value of Radius)

Draw Rainbow in C using Graphics (click)

Defined Pi in C

Thank You