The surface area of a cube is 24 . The volume of the cube is
(A) 4
(B) $3 \sqrt{3}$
(C) 9
(D) 16
(E) 8
A cube has six identical faces.

If the surface area of a cube is 24 , the area of each face is $\frac{24}{6}=4$.

Since each face of this cube is a square with area 4 , the edge length of the cube is $\sqrt{4}=2$.

Thus, the volume of the cube is $2^{3}$ which equals 8 .