public class Rectangle implements Polygon
{
    private final double height;
    private final double width;
    public Rectangle(double height, double width)
    {
        this.height = height;
        this.width = width;
    }
    @Override
    public double area()
    {
        return height*width;
    }
    @Override
    public double diameter()
    {
        return Math.hypot(height, width);
    }
    @Override
    public double perimeter()
    {
        return 2*(height + width);
    }
    @Override
    public int numSides()
    {
        return 4;
    }
    @Override
    public String toString()
    {
        return String.format("Rectangle(%s, %s)", width, height);
    }
    public double getWidth()
    {
        return width;
    }
    public double getHeight()
    {
        return height;
    }

}