1. The problem statement, all variables and given/known data what is the maximum volume of an open top box that can be created with 300m sq of metal assuming none is wasted? 2. Relevant equations 3. The attempt at a solution so that means the surface area of the box must total 300 m sq so A(l,w,h)= lw + 2lh + 2wh = 300 and volume is given by V(l,w,h) = lwh my problem is when taking partials for l w and h in the area equation, I get 0 as the critical points. Are my equations wrong?