Description

To calculate area of a Rectangle use formula
  area = length x breadth

C/C++

/* C Program to calculate area of a Rectangle */
//Save it as AreaRectangle.c

#include<stdio.h>
int main(){

    float length, breadth, area;

    printf("Enter the length of Rectangle : ");
    scanf("%f",&length);

    printf("Enter the breadth of Rectangle : ");
    scanf("%f",&breadth);

    area = (length * breadth);

    printf("The area of Rectangle : %.3f", area);

    return 0;
}

Input:
Enter the length of Rectangle : 5
Enter the breadth of Rectangle : 3

Output:
The area of Rectangle : 15.0

Java

/* Java Program to calculate area of a Rectangle */
//Save it as AreaRectangle.java

import java.io.*;
import java.util.Scanner;

public class AreaRectangle {

    public static void main(String[] args) {

            Scanner scanner = new Scanner(System.in);
        
            float length, breadth, area;

        System.out.println("Enter the length of Rectangle : ");
        length = scanner.nextFloat();

        System.out.println("Enter the breadth of Rectangle : ");
        breadth = scanner.nextFloat();

        area = (length * breadth);

        System.out.println("The area of Rectangle : "+ area);
    }
}

Input:
Enter the length of Rectangle : 
5
Enter the breadth of Rectangle : 
3

Output:
The area of Rectangle : 15.0

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