Answer:
216c³
Explanation:
8 yellow = 2³ (sides = 2 cubes)
Green added to cover yellow, making it (2+2)³ = 4³
Red added to cover green, making it (4+2)³ = 6³
Total cubes = 6³ = 216 cubes
Each cube has a volume = c³
Volume of the final cube = 216c³ units³