Иван Ершов

class Round
{
private:
	double _x;
	double _y;
	double _radius;

public:
	Round(double x, double y, double radius)
	{
		_x = x;
		_y = y;
		_radius = radius;
	}

	Round(){}

	double GetAbscissa()
	{
		return _x;
	}

	double GetOrdinate()
	{
		return _y;
	}

	double GetRadius()
	{
		return _radius;
	}

	double GetSquare()
	{
		return M_PI * _radius * _radius;
	}


};