Question

Johnny is designing a rectangular poster to contain 36-in squared of printing material with a 1 ​-in margin at the top and bottom and a 1 ​-in margin at each side. What overall dimensions will minimize the amount of paper​ used?

Answer 1

A=b*h
36 =6*6
(6+2)*(6+2) = 64in-squared

A square would be the most efficient, and its area would by 64in-squared the dimisions are 8inx8in.