Learning to write a C# program to compute the perimeter of a rectangle?

How would one write a C# program to compute the perimeter of a rectangle of width w and heighth. 

So far this is all I have

System;

System.Collections.Generic;

System.Linq;

System.Text;

ConsoleApplication1

classProgram

staticvoidMain(string[] args)

intheight = 1;

intwidth = 2;