Point in a circle

using System;

public class PointInACircle
{
    public static void Main()
    {
        Console.Write("Please input coordinates for x. x ="); // Here we ask for x coordinates
        double x = double.Parse(Console.ReadLine());
        Console.Write("Please input coordinates for y. y ="); // Here we ask for y coordinates
        double y = double.Parse(Console.ReadLine());
        Console.Write("Please input radius R. R =");// Here we ask for radius
        double R = double.Parse(Console.ReadLine());

        bool isInside = (x * x) + (y * y) <= (R*R);  //Here we check is this point in the circle. If circle radius is different than 0,0 you should use (x-value of center ) and (y-value of center)

        Console.WriteLine("Are these coordinates in the circle? This is " + isInside + "!");  //Finally print it
    }
}