Pretty sure my Calc2 prof pulled this trick on us sometime in the solids of revolution unit. Started deriving something on the board, just another cylinder ok, but wtf are you calling the radius ‘z’?
I moved to Alberta like eight years ago and I'm still appalled at what passes for good pizza in this province. Someone told me it's Greek influence, which explains why so many donair places are hailed for having the "best pizza in town". To the average Albertan, it's not good pizza unless the crust is five inches thick and incredibly dried-up.