Question

Find the total surface area of a cube with side length $1\text{m}$.

Answer 1

The total surface area of a cube is equal to $6a^2$ where $a$ is equal to the side length of the cube.

So,

$\begin{array}{cc}A& =6a^2\\ & =6\times (1{)}^2\\ & =6{\text{m}}^2\end{array}$