So if the width of the box is w ft, the length is 4/w ft, and the size of the
sheet it is floded from is w+2 by (4/w)+2 ft.
Opps, did not notice that we has a square sheet of metal, as its square w=2, and the
original sheet is as Earboth says 4'x4'
(2)Here 2(w+2)=(4/w)+2, which you should solve for w, you will have two
roots one of which will not satisfy the conditions to be a width, and the
other will, and it will be the solution.