Question

The screen size of a TV is given by the length of the rectangular diagonal.

Traditional TVs come in 4:3 ratio, that is, the ratio of length to width is 4 to 3. This means, if the length is x inches, then the width is (3/4)x.

LCD TVs come in 16:9 ratio.

Instructions

Write a program that:

1. Prompts the user to input the length of the diagonal (in inches) of the screen
2. Allows the user to select which type of TV the user would like to view the dimensions for
   • Ex.

      1: Traditional TV area.
     2: LCD TV Area
     3: Both types of TVs area 

Have the program calculate and display the:

1. Screen length
2. Screen width
3. Screen area

for the specified type of TV.

Answer 1

Program:

import java.util.*;

public class Main
{
   public static void main(String[] args) {
   Scanner s = new Scanner(System.in);
       System.out.print("Input length of the diagonal(in inches) of the screen: ");
       double length = s.nextDouble();
      
       System.out.println("Which type of TVs dimension would you like to see: ");
       System.out.println("1. Traditional TV area");
       System.out.println("2. LCD TV area");
       System.out.println("3. Both type TV area");
       System.out.print("Enter your choice: ");
       int choice = s.nextInt();
      
       if(choice == 1)
       {
       double width = (double)3/4 * length;
       double area = length * width;
       System.out.println("Traditional TV:");
       System.out.println("Screen length - "+ length);
       System.out.println("Screen width - "+ width);
       System.out.println("Screen area - "+ area);
       }
       else if(choice == 2)
       {
       double lwidth = (double)9/16* length;
       double larea = length * lwidth;
       System.out.println("LCD TV:");
       System.out.println("Screen length - "+ length);
       System.out.println("Screen width - "+ lwidth);
       System.out.println("Screen area - "+ larea);
       }
       else if(choice == 3)
       {
       double tradwidth = (double)3/4 * length;
       double tradarea = length * tradwidth;
       System.out.println("Traditional TV:");
       System.out.println("Screen length - "+ length);
       System.out.println("Screen width - "+ tradwidth);
       System.out.println("Screen area - "+ tradarea);
      
       System.out.println();
       double lcdwidth = (double)9/16 * length;
       double lcdArea = length * lcdwidth;
       System.out.println("LCD TV:");
       System.out.println("Screen length - "+ length);
       System.out.println("Screen width - "+ lcdwidth);
       System.out.println("Screen area - "+ lcdArea);
       }
       else{
       System.out.println("Sorry, invalid choice!!");
       }
      
      
   }
}

Output: