using System;

​

public class Program

{

    public static void Main()

    {

        int b = 6;

        int s = FaceCube(b);

        double trapec = FaceTrapec(2, 3, 6);

        Console.WriteLine("Hello World: " + trapec);

        Console.WriteLine(Min(8, 3));

    }

​

    public static int FaceCube(int a)

    {

        //int a = 5;

        int s = a * a;

        Console.WriteLine("Face Cube: " + s);

        return s;

    }

​

    public static double FaceTrapec(double a, double b, double h)

    {

        //int a = 5;

        double s = (a + b) * h / 2.0;

        //Console.WriteLine("Face Cube: "+ s);

        return s;

    }

​

    public static void Min(double num, double num1)

    {

        if (num > num1)

        {

            Console.WriteLine(num);

        }

        else

        {

            Console.WriteLine(num1);

        }

    }

}