07. 2D Rectangle Area

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _2D_Rectangle_Area
{
    class RectangularArea2D
    {
        static void Main(string[] args)
        {
            var x1 = double.Parse(Console.ReadLine());
            var y1 = double.Parse(Console.ReadLine());
            var x2 = double.Parse(Console.ReadLine());
            var y2 = double.Parse(Console.ReadLine());

            var a = Math.Abs(x1 - x2);
            var b = Math.Abs(y2 - y1);
            Console.WriteLine(a * b);
            Console.WriteLine(2 * (a + b));

        }
    }
}