//2

using System;

Console.Write("Enter the length of a Rectangle: ");

double length = double.Parse(Console.ReadLine());

Console.Write("Enter the width of a Rectangle: ");

double width = double.Parse(Console.ReadLine());

​

void RectangleEqual(double length, double width) {

    double area = length * width;

    if (length == width) {

        Console.WriteLine("This rectangle is a square");

        Console.Write("The area of that rectangle is " + area);

    }

}

​

RectangleEqual(length, width);