using System;

public class Program

{

    public static void Main()

    {

        float a;

        Console.WriteLine("Insert your circle ' s rafius");

        a = float.Parse(Console.ReadLine());

        Console.WriteLine("Area is {0:f}",(22/7f*(a*a)));

        Console.WriteLine("Circumfreence is {0:}",(2*(22/7f)*a));

    }

}