3.7 Point In A Circle

// Write an expression that checks if given point (x,  y) is inside a circle K({0, 0}, 2).

namespace _07.PointInACircle
{
    using System;

    public class PointInACircle
    {
        private const double Radius = 2d;

        public static void Main(string[] args)
        {
            checked
            {
                Console.Write("Enter value of coordinate X of given point: ");
                double pointX = double.Parse(Console.ReadLine());
                Console.Write("Enter value of coordinate Y of given point: ");
                double pointY = double.Parse(Console.ReadLine());
                bool pointIsInTheCircle = true;
                double temp = Math.Sqrt((pointX * pointX) + (pointY * pointY));
                if (temp > Radius)
                {
                    pointIsInTheCircle = false;
                }

                Console.WriteLine("Given point is In the Circle: {0} !", pointIsInTheCircle);
            }
        }
    }
}