C# methods

namespace ReviewProject
{
    internal class Program
    {
        static void Main(string[] args)
        {
            double result1 = calcArea(5.5);
            double result2 = calcArea(5.5, 10.0);

            Console.WriteLine("Square Area: " + result1);
            Console.WriteLine("Rectangle Area: " + result2);
        }

        static double calcArea(double a)
        {
            //Square area
            return a * a;
        }

        static double calcArea(double a, double b)
        {
            //Rectangle
            return a * b;
        }
    }
}