Overloading methods for different geomethrical figures areas

Keywords: c#

Question: 

I need to overload a method for it to be able to calculate the area of a circle, square, rectangle, triangle and a trapezoid. I think I've got them all figured out but the circle seems to be a problem.

    static void Pole(int x, double y = 3.14)
    {
        Console.WriteLine(x * x * y);
    }
    static int Pole(int x)
    {
        return x * x;
    }
    static int Pole(int x, int y)
    {
        return x * y;
    }
    static int Pole(int x, int y, int z = 2)
    {
        return x * y / z;
    }
    static int Pole(int x, int y, int v, int z = 2)
    {
        return (x + y) / z * v;
    }
    static void Main(string[] args)
    {
        int x = 2;
        int y = 3.14;
        Console.WriteLine(Pole(x, y));
        Console.ReadKey();

Answers: