Question

A rectangular document is to contain 64 square inches of print with a margin of 0.5 inch on each side. Find the dimensions of the document such that the least amount of paper is used.

5 x 17

6 x 18

8 x 8

9 x 9

Answer 1

No I did not know the formula

Answer 2

So would I do 64*0.5

Answer 3

Wait the margin is the blank part on the side right?

Answer 4

9x9 Ap = xy, then the area of the document (with the margins considered) would be Ad = (x + 1)(y + 1). Use the fact that Ap = xy = 64