Question

if a box has a width of 15, a height of 9 and a length of 18, what would be the least amount of cardboard needed to make the box

Answers

Damon
If no top:

If all from one rectangular sheet then:
length has to be 18+2*9
width has to be 15+2*9

I suppose you could say you save the four 9 by 9 corner cutouts, but not really.

If you make the bottom out of 15*18
and then the walls out of one long strip which is 9 *(2*18+22*15) then you save those wasted corners but have to use more corner tape.
Reiny
if the top is included ...

SA = 2(15x9) + 2(15x18) + 2(9x18)

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