Question

Find the total surface area of a cube with side $9cm$. (in $c{m}^2$)

Answer 1

Given, the side of a cube $=9cm$
The total surface area of cube $=6\times {side}^2$
$=6\times 9\times 9$
$=6\times 81$
$=486$
$\therefore$ The total surface area of cube is $486{cm}^2$.