Answer:
The answer to your problem is, 

Explanation:
Sophie has a small cube shaped box.
Volume of the box is 

We have to find the area of one face of the box.
Let one side of the box is x
Then volume = 
 = 64
x³ = 4³
 = 4
Now area of one face of the cube = x²
then area = 4² = 16 cm²
Thus the answer to your problem is, 
