Small Cubes
Thanks Jean B
How many small cubes are needed
to build this figure?

Answer: 111 cubes
We start with the right‑side face, which has 21 cubes.
That face appears 4 times, giving 21 × 4 = 84 cubes.
Between each of those faces, there are 9 cubes, and there are 3 gaps, so
9 × 3 = 27 cubes.
Add them together:
84 + 27 = 111 cubes.