public static void povrsina1(double a, double b)
Console.WriteLine("Povrsina je: " + povrsina);
public static double povrsina2(double a, double b)
public static void Main()
double a = double.Parse(Console.ReadLine());
double b = double.Parse(Console.ReadLine());
double p = povrsina2(a,b);
Console.WriteLine("P = " + p);