#include <iostream>
using namespace std;

#define PI 3.1415926

class Circle : public Shape
{
public:
	Circle(double _radius);
	double area();
	double girth();
	void show();
private:
	Circle();
	double radius;
};

Circle::Circle(double _radius)
{
	radius = _radius;
}

double Circle::area()
{
	return PI * radius * radius;
}

double Circle::girth()
{
	return 2 * PI * radius;
}

void Circle::show()
{
	Shape::show();
	cout<<"Type: Circle"<<endl;
}