using System;
using System.Threading;

class CircleAreaRadius
{
    static void Main()
    {
	//Write a program that reads the radius r of a circle and prints its perimeter and area formatted with 2 digits after the decimal point.
	
        Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.InvariantCulture;

        Console.Write("Enter r (radius) of a circle: ");
        double r = double.Parse(Console.ReadLine());
        
        Console.WriteLine("The circle Perimeter is: {0:N2}", 2 * Math.PI * r);
        Console.WriteLine("The cirlce Area is: {0:N2}", Math.PI * r * r);
            
    }
}