You are to design an open-top rectangular stainless-steel vat. It is to have a square base and a volume of $\displaystyle 32ft^3$; to be welded from quarter-inch plate, and weigh no more than necessary. What dimensions do you recommend?

I suck at open-top problems, sorry for posting so many threads, I just like to learn.

EDIT: Nevermind, solved it after a couple minutes of correcting wrong answers.