Inheritance problem

[DPaul]

OK, I understand, I had hoped to be able to make a class from "loose ends"
that have been created over time.
This is how i get the right results:

from geometryclass import *
 
mySpere = sphere(10)
print(mySphere.surface())
myCube = cube(10)
print(myCube.surface())

I think geometry needs to be a superclass, whatever that is.
I'll investigate :-)
Paul