using System;

namespace CirclePerimeterAndArea
{
    class CirclePerimeterAndArea
    {
        static void Main()
        {
            Console.Write("Please enter circle's radius: ");
            double radiusCircle = double.Parse(Console.ReadLine());
            double areaCircle = Math.PI * (radiusCircle * radiusCircle);
            double perimeterCircle = Math.PI * (2 * radiusCircle);
            Console.WriteLine("The area is: {0:f2}\nThe perimeter is {1:f2}", areaCircle, perimeterCircle);
        }
    }
}