A well known math joke is the following:
Question: If you have a cylinder with a raduis “z” and a height of “a”, then what is the volume?
Answer: pizza
Well, someone finally put it into picture format:

I’m pretty sure that Jay Fallon created the image above, but I ended up seeing it on two other websites first.
Thanks for the image. I’m just about up to that one.
I’ve seen the joke before but not illustrated.