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To determine the area of one face of the cube, we need to find the area of one of the squares on the cube. Since the side length is 9 inches, the area of one face is 9 * 9 = 81 square inches.
To find the total surface area of the cube, we need to find the sum of the areas of all six faces. Since there are six faces on a cube, the total surface area is 6 * 81 = 486 square inches.