Tick (✓) the correct answer:

(b) $125 \mathrm{~cm}^{3}$

Total surface area $=6 a^{2}=150 \mathrm{~cm}^{2}$, where $a$ is the length of the edge of the cube.

$\Rightarrow 6 a^{2}=150$

$\Rightarrow a=\sqrt{\frac{150}{6}}=\sqrt{25}=5 \mathrm{~cm}$

$\therefore$ Volume $=a^{3}=5^{3}=125 \mathrm{~cm}^{3}$