Question

Tick (✓) the correct answer:
The volume of a cube is 343 cm³. Its total surface area is
(a) 196 cm²
(b) 49 cm²
(c) 294 cm²
(d) 147 cm²

Answer 1

(c) $294c{m}^2$

Volume$=a^3=343c{m}^3$
$\Rightarrow a=\sqrt[3]{343}=7cm$
∴ Total surface area$=6a^2=6\times 7\times 7=294c{m}^2$