using System;

public class Program

{

    public static void Main()

    {

        double length,width,height;

Console.Write("enter the length");

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

Console.Write("enter the width");

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

Console.Write("enter the height");

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

Console.WriteLine("the size of the box{0}cm3",height*length*width);

​

    }

}