Think of surface area of a prism as the amount of paper needed to wrap a box for Christmas.
Step by step directions for finding the surface area of a prism
First look at the length and the width of the top
Multiply this by two because you have a top and a bottom.
You will do the same for the sides and then the ends.
Add all these together to get the surface area.
MooMooMath/Surface Area Prism