Answer:
396 in²
Step-by-step explanation:
The general formula for the surface area of a prism is:
SA = 2ab + 2ac + 2bc, where 'a', 'b' and 'c' are equal to the lengths of the prism. In this case, the lengths are 7 in, 6 in and 12 in. Plugging these values into the equation:
SA = 2(7 * 6) + 2(7 * 12) + 2(6 x 12)
SA = 84 + 168 + 144 = 396 in²
