Options for last part Increasing / decreasing Increasing / decreasing Maximum/ minimum

A box with a square base and open too must have a volume of 119164 cm3. We wish to find the dimensions of the box that minimize the amount of material used. First, find a formula for the surface area of the box in terms of only as, the length of one side of the square base. 14(3) = i \\ Next, find the derivative, A ' (3:) AW = Z The critical value is a: : :1 The function is until the critical value, and v after, so the critical value corresponds to a local v