Point in a Circle

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Globalization;

namespace _07PointInACircle
{
    class PointInACircle
    {
        static void Main()
        {
            System.Threading.Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
            do
            {
                Console.Write("Enter a value for x: ");
                float x = float.Parse(Console.ReadLine());
                Console.Write("Enter a value for y: ");
                float y = float.Parse(Console.ReadLine());
                float r = 2;
                if (((x * x) + (y * y)) == r * r)
                {
                    Console.WriteLine("The point is on the circle.");
                }
                else if (((x * x) + (y * y)) < r * r)
                {
                    Console.WriteLine("The point is inside the circle.");
                }
                else if (((x * x) + (y * y)) > r * r)
                {
                    Console.WriteLine("The point is outside the circle.");
                }
                else
                {
                    Console.WriteLine("Wrong coordinates.");
                }
                Console.Write("Do you want to continiue? (Y/N): ");

            } while (Console.ReadLine().ToUpper() == "Y");
        }
    }
}