Rectangle_Properties

using System;

namespace Rectangle_Properties
{
    class Program
    {
        static void Main(string[] args)
        {
            double width = double.Parse(Console.ReadLine());
            double height = double.Parse(Console.ReadLine());


            double diagonal = (Math.Sqrt((Math.Pow(width, 2)) + (Math.Pow(height, 2))));
            double area = width * height;
            double perimeter = (2 * width) + (2 * height);

            Console.WriteLine(perimeter);
            Console.WriteLine(area);
            Console.WriteLine(diagonal);


        }
    }
}