Since the crate is a cube, it is the same length on all sides. You know that its volume is 125inches3, and the formula for volume for cubes is V = s^3, so solving for s (125^1/3), you get 5inches, which is the length of one side. To find the surface area, find the area of one side and then multiply by 6 (because a cube has 6 sides), the area of one side is (5 * 5 = 25inches2), and the total area is (6 * 25 = 150inches2).
