static void Main(string[] args) { Rectangle r = new Rectangle(2, 4); Console.WriteLine("a=" + r.Side1 + " b=" + r.Side2); r.AreaCalculation(r.Side1, r.Side2); Console.Write("Area rectangle: " + r.Area); r.PerimetrCalculation(r.Side1, r.Side2); Console.WriteLine(); Console.Write("Perimetr rectangle: " + r.Perimetr); Console.WriteLine(); Console.WriteLine("------------------------------------------------"); Console.Write("Enter a="); r.Side1 = double.Parse(Console.ReadLine()); Console.Write("Enter b="); r.Side2 = double.Parse(Console.ReadLine()); r.AreaCalculation(r.Side1, r.Side2); Console.Write("Area rectangle: " + r.Area); r.PerimetrCalculation(r.Side1, r.Side2); Console.WriteLine(); Console.Write("Perimetr rectangle: " + r.Perimetr); }