static void Main(string[] args)
{
Circle aCircle = new Circle();
aCircle.radius = Convert.ToDouble(Console.ReadLine());
Console.WriteLine(aCircle.ShowDiameter(aCircle.radius));
Console.WriteLine(aCircle.ShowPerimeter(aCircle.radius));
Console.WriteLine(aCircle.ShowArea(aCircle.radius));
Console.ReadKey();
}
static void Main(string[] args)
{
//Circle aCircle = new Circle();
////double radius = Console.ReadLine().ToString();
//double radius = Convert.ToDouble(Console.ReadLine());
//Console.WriteLine("\n" + aCircle.GetDiameter(radius) +"\n");
//Console.WriteLine(aCircle.GetPerimeter(radius)+ "\n");
//Console.WriteLine(aCircle.GetRadious(radius) + "\n");
Circle aCircle = new Circle();
aCircle.radius = 100;
Console.WriteLine("Perimeter " + aCircle.GetPerimeter());
Console.WriteLine("Perimeter " + aCircle.GetDiameter());
Console.WriteLine("Perimeter " + aCircle.GetArea());
Console.ReadKey();
}