Write a Java program that computes and displays the perimeter of a lettersize (8.5 × 11 inch) sheet of paper and the length of its diagonal.
public class Main
{
public static void main(String[] args) {
final double PAPER_WIDTH = 8.5;
final double PAPER_LENGTH = 11.0;
double perimeter;
double diagonal;
perimeter = 2 * PAPER_LENGTH + 2 * PAPER_WIDTH;
diagonal = Math.sqrt(Math.pow(PAPER_WIDTH, 2) + Math.pow(PAPER_LENGTH, 2));
System.out.printf("Perimeter: %.2f\n", perimeter);
System.out.printf("Diagonal length: %.2f\n",diagonal);
}
}