use 3.14. How much foil is required to cover a rectangular box that is 4in by 8in by 5in?

Answer 1

Surface Area of a Rectangular Prism = 2ab + 2bc + 2ac

A = 2(4*8) + 2(4*5) + 2(8*5)
A = ?

http://www.math.com/tables/geometry/surfareas.htm