programmingfaster.com

programmingfaster.com

#include<stdio.h>
#include<conio.h>
#define pi 3.14
void main()
{
    float r1,r2,a1,a2,area;
    printf("enter the radius of large circle");
    printf("%f",&r1);
    printf("enter radius of small circle");
    scanf("%f",&r2);
    a1=pi*r1*r1;
    a2=pi*r2*r2;
    area=a1-a2;
    printf("the area of the first circle is :%.2f",a1);
    printf("\n the area of second circle is:%.2f",a2);
    printf("\n the area between two circles is:%.2f",area);
    getch();

}