Question

Write a program in Java to accept the diagonal of a square, find and display the

area & perimeter.​

Answer 1

Explanation:

this is your answers.......

Answer 2

Question:-

➡ Write a program to accept the length & breadth of a rectangle. Calculate & display the area, perimeter or diagonal of the rectangle as per the user’s choice.

Program:-

This is written in Java.

import java.util.*;

class Choice

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

double l, b;

int ch;

System.out.print("Enter the length of the rectangle: ");

l=sc.nextDouble();

System.out.print("Enter the breadth of the rectangle: ");

b=sc.nextDouble();

System.out.println("1. Calculate Area.");

System.out.println("2. Calculate Perimeter.");

System.out.println("3. Calculate Diagonal.");

System.out.print("\nEnter your choice: ");

ch=sc.nextInt();

switch(ch)

{

case 1:

System.out.println("Area of the rectangle is: "+a*b);

break;

case 2:

double p=2*(l+b);

System.out.println("Perimeter of the rectangle is: "+p);

break;

case 3:

double d=Math.sqrt(l*l+b*b);

System.out.println("Diagonal of the rectangle is: "+d);

break;

default: System.out.println("Invalid Choice. Please try again later.");

}

}

}