All cubes have six faces. Likewise, the cube shown above also has 6 faces.
Length of side of one face of cube = 3 inches
Area of one face :
= Side × Side
= 3 × 3
= 9 inch²
Therefore, the area of one face of this cube = 9 inch²
Area of cube = sum of the area of all faces
Then, the area of this cube :
Therefore, the area of this cube = 54 inches²