Another way to calculate PI

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

namespace CalculatePi
{
    struct Point
    {
        public double x;
        public double y;
    }

    class Program
    {

        static void Main(string[] args)
        {
            var startdate = DateTime.Now;
            double n = 20000000;
            Point p;
            Random rand = new Random();
            int count = 0;

            for (int i = 0; i < n; i++)
            {
                p.x = rand.NextDouble() * 2 - 1;
                p.y = rand.NextDouble() * 2 - 1;
                if (IsInCircle(p)) count++;
            }
            var enddate = DateTime.Now;
            Console.WriteLine("In case of {0} numbers, result came in {1} seconds", n, (enddate-startdate).TotalSeconds);
            Console.WriteLine("Result is: " + 4.0 * count / n);
            Console.WriteLine("Math.PI: " + Math.PI);
            Console.ReadLine();
        }

        static bool IsInCircle(Point p)
        {
            return Math.Sqrt(p.x * p.x + p.y * p.y) < 1;
        }
    }
}