Question

What is the formula for finding the surface area of a rectangular prism?

Answer 1

first of all make the diagram of rectangular prism.

Answer 2

making diagram solves half of your problem buddy...

Answer 3

there is no formula... its just area of rectangles

front and back are the same
left and right are the same
top and bottom are the same

so SA = 2 x ( area of front + area of right + area of top)

Answer 4

http://math.about.com/od/formulas/ss/surfaceareavol_4.htm