Help please asap. Also please teach how to do this type of problem

Answer:
[tex]64m^{2}[/tex]
Step-by-step explanation:
and the problem said one small cube with 1m width that means it also has 1m length and height
so lets count the cubes for the height, length and width
Now lets put the givens we got from the figure in the formula of TSA
2*(4*2+4*2+4*4)=64