using System;

public class Program

{

    class circle

    {

        double x;

        double y;

        double r;

        public circle(double x, double y, double r)

        {

            this.x=x;

            this.y=y;

            this.r=r;

        }

        public void setx (double x)

        {

            this.x=x;

        }

        public double getx()

        { 

            return this.x;

        }

        public void sety (double y)

        {

            this.y=y;

        }

        public double gety()

        { 

            return this.y;

        }

        public void setr (double r)

        {

            this.r=r;

        }

        public double getr()

        { 

            return this.r;

        }

        public override string ToString()

        {

            string TEXT;

            TEXT="X=" + this.x+ "\tY=" +this.y+ "\tR=" +this.r;

            return TEXT;

        }

        public double SPACE()

        {

            return (r*r*3.14);

        }

         public double circumference()

         {

             return  (2*r*3.14);

         }

    }

    public static void Main()

    {

        circle C1= new circle(2,3,4);

        Console.WriteLine(C1);

        Console.WriteLine("the space={0}\t the circumferenc={1}\n",C1.SPACE(),C1.circumference());

        circle C2= new circle(3,5,6);

        Console.WriteLine(C2);

        Console.WriteLine("the space={0}\t the circumferenc={1}\n",C2.SPACE(),C2.circumference());

        circle C3= new circle(5,6,7);

        Console.WriteLine(C3);

        Console.WriteLine("the space={0}\t the circumferenc={1}\n",C3.SPACE(),C3.circumference());

​

    }

}