Answer: 396 units²
Step-by-step explanation:
The surface area of a prism with side lengths of 12, 7, and 6 can be found with:
SA = 2WL + 2LH + 2WH
We will plug in our known values and solve for the surface area by simplifying. Let 12 be the length, 7 be the width, and 6 be the height.
SA = 2(7)(12) + 2(12)(6) + 2(7)(6)
SA = 168 + 144 + 84
SA = 396 units²
