using System;

​

class Circle

{

    private static double radius=12;

    private static string color = "Red";

    public static string circle(string colorName){

        colorName = color;

        return colorName;

    }

    public static double SetRadius(double r){

        r= radius;

        return r;

    }

    public static double GetRadius(){

        return Circle.SetRadius(radius);

    }

    public static string GetColor(){

        return Circle.circle(color);    

    }

    public static double GetArea(){

        double AS = Circle.GetRadius()*Circle.GetRadius();

        double AF = AS * 3.14;

        return AF;

    }

    public static double GetPerimeter(){

        double CF = Circle.SetRadius(radius)*3.14;

            return CF;

    }

}

public class Program

{

    public static void Main()

    {

        string CircleColor = Circle.GetColor();

        Console.WriteLine("Circle: "+CircleColor);

        var Circleradius = Circle.GetRadius();

        Console.WriteLine("Radius: " + Circleradius); 

        var CircleArea = Circle.GetArea();

        Console.WriteLine("Area: " + CircleArea);

        var CircleCircumference = Circle.GetPerimeter();

        Console.WriteLine("Circumference: " + CircleCircumference); 

    }

}