using System;

​

namespace Radius_of_Circle__prt.Perimeter__Area_

{

    class Program

    {

        static void Main(string[] args)

        {

            Console.Write("Please enter the value of the radius: ");

            int r = Int32.Parse(Console.ReadLine());

            Console.WriteLine($"The perimeter is: {2 * Math.PI * r}");

            Console.WriteLine($"The area is: {Math.PI * r * r}");

        }

    }

}

// Write a program that reads from the console the radius "r" of a circle and prints its perimeter and area.