static void Main(string[] args) { MyRectangle rect = new MyRectangle(8, 4); Console.WriteLine(rect.GetArea()); Console.WriteLine(rect.GetPerimeter()); Console.WriteLine(rect.About()); Console.WriteLine("----"); Random MyVolumeRectangle vrect = new MyVolumeRectangle(2, 1, 4); Console.WriteLine(vrect.GetArea()); Console.WriteLine(vrect.GetPerimeter()); Console.WriteLine(vrect.GetVolume()); Console.WriteLine(vrect.About()); Console.ReadLine(); }