using System;

public class Program

{

    public static void Main()

    {

       string radius;

       Console.WriteLine("Please enter your choice of radius: ");

       radius = Console.ReadLine();

       double area;

       int r;

       double p = 3.1415;

       r = Convert.ToInt32(Console.ReadLine());

       area = p * r * r;    

       string circumference;

       Console.WriteLine("Please enter your choice of circumference: ");

       circumference = Console.ReadLine();

       double C;

       int X = 2;

       C = X * p * r; 

       Console.WriteLine("The area is:" + area);

       Console.WriteLine("The circumference is:" + circumference);

        Console.ReadLine();

    }

}