public static class Circle
static private double pi = 3.1416;
static public double Perimeter(double R)
static public double Face(double R)
public static class Sphere
static private double pi = 3.1416;
static public double Surface(double R)
static public double Volume(double R)
return 4 * pi * R * R * R /3;
public static void Main(string[] args)
Console.WriteLine("Perimetera na krag e:" + Circle.Perimeter(4));
Console.WriteLine("Liceto na krag e:" + Circle.Face(4));
Console.WriteLine("Povarhnostta na kalbo e :" + Sphere.Surface(4));
Console.WriteLine("Obema na kalbo e:" + Sphere.Volume(4));