Program to calculate the area and perimeter of the rectangle, and the area and circumference of the circle.

Q.The length and breadth of a rectangle and radius of a circle are input through the keyboard. Write a program to calculate the area and perimeter of the rectangle, and the area and circumference of the circle.

Program:

#include <stdio.h>

#include<conio.h>

#define PI 3.1428

void main()

{

float r,a,p,l,b,pr,A;

printf(“enter length and breadth of rectangle=”);

scanf(“%f”&l,&b);

printf(“enter radius of circle=”);

scanf(“%f”&r);

     a=PI*r*r;

p=2*PI*r;

     A=l*b;

     pr=2*(l+b);

     printf(“\nThe area of circle is=%f”, a);

     printf(“\nThe perimeter of circle is=%f,p);

     printf(“\nThe area of rectangle is=%f”,A);

     printf(“\nThe perimeter of rectangle is=%f”,pr);

     getch();

     }

Output:

enter length and breadth of rectangle= 3,2

enter radius of circle =7

The area of circle is=15309972

The perimeter or circle=43.9992

The area of rectangle is=6

The perimeter of rectangle is=10