Question

A gift box is a rectangular prism14inches long,5inches wide,and 4inches high.If the box is to be covered in fabric ,how much fabric is needed if there is no overlap?

Answer 1

that's the surface area

when he length=L
width=W
and height=H


SA=2(LW+WH+LH)
so
L=14
W=5
H=4

subsitute
SA=2((14)(5)+(5)(4)+(14)(4))
SA=2(70+20+56)
SA=2(146)
SA=292

you need 292 square inches of fabric