Add an Ellipse class to the GeometricObject class heirarchy as a sublcass of GeometricObject.
An ellipse is an oval (elongated/squashed circle). It has
two numeric values that are the radius of the long side and
the radius of the short side, typically called a and b.
Its area is πab. It doesn't have a diameter.
Its perimeter p is approximately:
(this is close enough for UMUC work).
Uncomment the ellipse testing code of TestGeometricHeirarchy to test your Ellipse class.