Answer:
480in^3
Explanation:
So to find the answer for this, you want to find the separate volumes of each of the rectangular prisms. The formula for volume is V=Ah where A is the area of the base. So for the bigger prism, V=(8)(10)(5)=400. For the smaller prism, V=(5)(4)(4)=80. So then you just add 400+80 to get the total area, and you should get 480!