using System;

public class Program

{

    public static void Main()

    {

        double height = 0;

        double width = 0;

        double perimeter = 0;

        double area = 0;

        double diagonal = 0;

        Console.WriteLine("Enter the height ");

        height = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("Enter the width ");

        width = Convert.ToDouble(Console.ReadLine());

        perimeter = height*2+width*2;

        Console.WriteLine($"The perimeter is {perimeter}");

        area = height*width;

        Console.WriteLine($"The area is {area}");

        diagonal = Math.Sqrt(Math.Pow(height,2) + Math.Pow(width,2));

        Console.WriteLine($"The diagonal is {diagonal}");

    }

}