A poster of total area 576 in2 is to have a margin of 4 inches at the top and bottom and 1 inch at each side.
(a) Find the dimensions of the poster which give the largest printed area.
height in
width in

(b) Suppose that, instead, we know the poster will contain 576 in2 of printed material with margins of 4 inches at the top and bottom and 1 inch at each side. Find the dimensions of the poster that minimize its total size.
height in
width in

Question

A poster of total area 576 in2 is to have a margin of 4 inches at the top and bottom and 1 inch at each side.
(a) Find the dimensions of the poster which give the largest printed area.
height      	in
width      	in

(b) Suppose that, instead, we know the poster will contain 576 in2 of printed material with margins of 4 inches at the top and bottom and 1 inch at each side. Find the dimensions of the poster that minimize its total size.
height      	in
width      	in