gistfile1.txt

abstract class Container {
  double height;
	Container(double height)
	{
		this.height = height;
	}
	abstract double getTopArea();
	abstract double getTopPerimeter();
	
	double getVolume()
	{
		return height * getTopArea();
	}
	double getSurfaceArea()
	{
		return 2*getTopArea() + height * getTopPerimeter();
	}
}

class CircularContainer extends Container
{
        // add appropriate data definitions
	CircularContainer(double height, double radius)
	{
		// Fill in details
	}
	// implement required abstract methods
}

class RectangularContainer extends Container
{
	// add appropriate data definitions
	RectangularContainer(double height, double width, double length)
	{
		// Fill in details
	}
	// implement required abstract methods
}