Answer:
30 in
Step-by-step explanation:
subtract 5 inches from 8 inches and you get 3 inches (the height)
then we already have the given 4 inches (the width)
then finally we can see from figure b that the depth is 5 inches
you multiply all of them together and get 60, before dividing that in half to get 30.
(not certain about units)
