Area And Circumference Of Circle

#include<stdio.h>
#include<conio.h>
#include<math.h>
#define p 3.1428571429

int main()
{
    float r, c, a;
    clrscr();
    printf("Enter Radius of the Circle: r=");
    scanf("%f", &r);
    c=2*p*r;
    printf("Circumference of the Circle=%f\n", c);
    a=p*r*r;
    printf("Area of the Circle=%f\n", a);
    getch();
    return 0;
}

     

           

Note: Need to be arranged in compiler after copied

   

 OutPut:

Enter Radius of the Circle: r=2 Circumference of the Circle=12.571428 Area of the Circle=12.571428