Answer: 5400 in sq. (in^2)
Step-by-step explanation:
In order to find Surface Area of a Cube, or SA, you need to know the formula. That is, SA = 6a^2, with a = edge length.
The edge length given is 2 1/2 ft, or 5/2 ft. Convert ft to in by multiplying by 12. Now, plug into the formula your answer. SA = 6(30)^2.
Finally, you should get 5400 in^2