Answer:
[tex]S = 392\ in^2[/tex]
Step-by-step explanation:
Step 1: Determine important information
Using the given numbers it doesn't really matter which is which because the equation multiplies everything together.
Surface Area of a Rectangular Prism → [tex]S= 2(wl+hl+hw)[/tex]
Step 2: Plug in the values and solve
[tex]S = 2((12\ in * 8\ in) + (5\ in * 8\ in) + (5\ in * 12\ in))[/tex]
[tex]S=2(96\ in^2 + 40\ in^2 + 60\ in^2)[/tex]
[tex]S = 2(196\ in^2)[/tex]
[tex]S = 392\ in^2[/tex]
Answer: [tex]S = 392\ in^2[/tex]
