You want to build a box fort with a square base, but you don't have an already-constructed box. You do, though, have 48ft²  of cardboard and a lot of duct tape, i.e. you can cut up your card Board any way you want. What are the dimensions that will maximize the volume of your fort? Note that forts with windows are a bad idea, so you'll have to leave the top off so you can see.