Question

${\text{Find the side of a cube whose surface area is 600 cm}}^2$

Answer 1

$\text{Total surface area of a cube}=6a^2$
$\Rightarrow 6a^2=600$
$\Rightarrow a^2=\frac{600}{6}=100$
$\Rightarrow a^2=100$
$\Rightarrow a=\sqrt{100}=10$
$\therefore \text{The side of a cube}\left(a\right)=10\text{cm}.$