write a program to find area and perimeter of a circle.

/* wp to find area and perimeter of a circle */
#include<stdio.h>
main()
{
float rad,area,peri;
printf("enter the radius of a circle:");
scanf("%f",&rad);
area=3.14*rad*rad;
peri=2*3.14*rad;
printf("area=%f\n perimeter=%f\n",area,peri);
}