﻿using System;

class CirclePerimeterArea
{
    static void Main()
    {
        
        Console.WriteLine("Enter the Circle's radius : ");
        double radius = double.Parse(Console.ReadLine());
        double perimeter = 2.0 * Math.PI * radius;
        double area = Math.PI * radius * radius;

        Console.WriteLine("Perimeter: {0:F2}\nArea: {1:F2}", perimeter, area);
    }
}