//write a program to accept inner and outter radius of a ring. print the perimeter, area of the ring.
#include<stdio.h>
int main()
{
float r1, r2, area , perimeter;
printf("\n Enter inner radius of ring :");
scanf("%f", &r1);
printf("\n Enter outer radius of ring :");
scanf("%f", &r2);
perimeter = (2*3.14)*(r1+r2);
area = 3.14*(r1*r1) + (r2*r2);
printf("\n Perimeter of cricle is %f", perimeter);
printf("\n\n Area of circle is %f", area);
}