Solution:
Given the cube below:
The net of the cube is shown below:
The area of each square face is
[tex]\begin{gathered} area\text{ of square = L}^2 \\ =2^2 \\ =4\text{ ft}^2 \end{gathered}[/tex]
Since there are 6 square faces in the net, the surface area of the cube becomes
[tex]\begin{gathered} 6\times4\text{ ft}^2 \\ =24\text{ ft}^2 \end{gathered}[/tex]
Hence, using a net, the surface area of the cube is
[tex]24\text{ ft}^2[/tex]
