Answer: 384 in²
Step-by-step explanation: Surface area is the sum of the areas of all of the faces of a three-dimensional figure.
So to find the surface area of a cube, it's important to understand 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.
Area = S²
Since the length of a side is 8 inches, we have (8 in.)² or 8 inches x 8 inches which gives us 64 in.².
Now, since there are 6 sides to a cube, we have (64 in.)² (6) which is equal to 384 inches².
Therefore, the surface area of the cube is 384 in².