Question 812820
If the dimensions are 5 by 3 by 4,
use labels L = 5 , W = 4 , H = 3.
There are six surfaces on a box, so we want
 2*LW + 2*LH + 2*WH .
 2*5*4 + 2*5*3 + 2*4*3
  40 + 30 + 24
  94 ft^2