Answer:
252 inches
Step-by-step explanation:
Alright, so we've got to find the surface area of both of the rectangular prisms and add them together.
We can use the equation 2(2l+hl+hw)
Plug the numbers in for the first box and you get 62 for the surface area.
Do the same for the second, you should get 190.
Now we just need to add the two together. 190+62= 252