To find the surface area of the Rubik's cube, we need to calculate the surface area of each individual smaller cube and then multiply by the total number of smaller cubes.
Each side of the Rubik's cube is made up of 3x3=9 smaller cubes. Since there are 6 sides to a cube, the total number of smaller cubes is 6x9=54.
The surface area of each smaller cube is 6 square inches (since each cube has 6 faces), so the total surface area of the Rubik's cube is 54x6=324 square inches.
Therefore, the surface area of the Rubik's cube is 324 square inches.