public static void Main(string[] args) { Circle first = new Circle(); string s1 = Console.ReadLine(); double r = double.Parse(s1); first.FindArea(r); first.FindDiametr(r); first.FindCircumference(r); }
static void Main(string[] args) { Circle c = new Circle(int.Parse(Console.ReadLine())); c.FindArea(); c.FindDiameter(); c.FindCircumference(); Console.WriteLine(c); Console.ReadKey(); }