Except the mathematical variable name for radius is r. Also for a cylinder you use the term height, not thickness. Which is called h in math. So by all accounts it should be called Pirrh.
Edit: Also also, with this logic you could've just called a pizza "Volume". Would've saved you a lot of time :/
Is it fair that I have to post a source when someone criticizing doesn’t?
If you're trying to debunk a myth or call someone's BS, then yes a source should be your opening statement. Is it fair? No. Is it necessary? Absolutely.
With all that said thank you for providing the source. A very well written one it was. I am going to debunk this myth now too, if and when I see it.
No no, I have heard better excuses than that. Now if you'll excuse me, I'm gonna have a slice of Volume now thank you very much.