using System;

public class Program

{

    public static void Main() 

    {

    double radie=2.4;

    Console.WriteLine("Cirkelns omkrets: "+CirkelOmkrets(radie));

    Console.WriteLine("Cirkelns area: "+CirkelArea(radie));

    }

    static double CirkelOmkrets(double r)

    {

        double d = r + r;

        return d * 3.14;

    }

    static double CirkelArea(double r)

    {

        return r * r * 3.14;;

    }

}