Answer: 384 in.²
Step-by-step explanation: Surface area is the sum of the areas of all of the faces of a three-dimensional figure.
To find the surface area of a cube, notice that each face of a cube has the same area so we can simply find the area of one face of a cube and multiply it by the number of faces which is 6.
To find the area of one face of a cube, we can use the formula for the area of a square which is as followed.
Area = side²
Since the length of a side is 8 inches we have (8 in.)² or 8 inches × 8 inches which is 64 inches².
Now since there is six sides to a cube, we will multiply 64 inches² by 6.
(64 in.)² (6) = 384 in.².
Therefore, the surface area of the cube is 384 in.².
