Surface area of a rectangular prism:
[tex]SA=2(wl+hl+hw)[/tex]
Substitute 1.2 for all of the variables in the formula:
[tex]SA=2[(1.2)(1.2)+(1.2)(1.2)+(1.2)(1.2)][/tex]
Using a calculator, you should get an answer of:
[tex]SA=8.64\text{ }yd[/tex]
The answer is that the surface area of this shape is 8.64 yards.
