Answer:
D. 384 units^2
Explanation:
The surface area of a cube can be found using the following formula:
S=6s^2
where s is the side length.
In this case, the side length of the cube is 8 units.
s=8 units
Substitute 8 units in for s.
S=6*(8 units)^2
First, evaluate the exponent.
(8 units)^2=8 units * 8 units= 64 units^2
S=6* 64 units^2
Multiply 6 and 64
S=384 units^2
The surface area of the cube is 384 square units, therefore D. 384 units^2 is correct.