Answer:
216 cubes.
Step-by-step explanation:
The easiest way to take on this problem is to divide the side of the bigger cube by the smaller one.
[tex] 3 \div \frac{1}{2} = 3 \times 2 = 6[/tex]
Then, as in with volume, we cube this value to find the number of cubes necessary to fill such a space.
[tex] {6}^{3} = 216[/tex]
