When you put a box of dimensions (W x H X D) in a padded envelope of dimensions (X x Y), what is the mathematics?
The padded envelope also has to have a flap of length (F), it also has welded seams (S). There also needs to be some extra gap so the box can be taken in/out (G). The corners are tricky because of how the paper creases - this takes the maths out of basic trigonometry. For this reason I would like a bit of help with my homework!