using System;

public class Program

{

    public static void Main()

    {

        const double PI = 3.1415;

        Console.Write("Input radius : ");

        double radius = double.Parse(Console.ReadLine());

        Console.WriteLine("--------------------------------------------");

        double circleArea = PI * radius * radius ;

        double circumference = 2* PI *radius ;

        double volume = (4/3.0) * PI * radius * radius * radius;

        Console.WriteLine("Circle area\t   = {0:F3} ",circleArea);

        Console.WriteLine("Circumference     = {0:F3}",circumference);

        Console.Write("Volumn round      = {0:F3}",volume);

    }

}