Question

Write a short application that computes the perimeter of a rectangle. It should allow the user to input the length and width of the rectangle as a double.

Java language.

Answer 1

import java.util.Scanner;

public class RectanglePerimeter {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter length of rectangle: ");
        double length = in.nextDouble();
        System.out.print("Enter width of rectangle: ");
        double width = in.nextDouble();

        double perimeter = 2 * (length + width);
        System.out.println("Perimeter of rectangle is " + perimeter);
    }
}