Find the radius of circle

Find the radius of circle

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ConsoleApplication29

{

    class Program

    {

        static void Main(string[] args)

        {

            float r;

            Console.WriteLine("enter the radius of circle:");

            r = float.Parse(Console.ReadLine());

           double area = ((3.14) * (r*r));

            Console.Write(area);

            Console.ReadLine();

        }

    }

}

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