In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data
triangular prism (trap)
base area = 4.5 in²
height = 3in
volume = ?
Step 02:
volume = base area * h
= 4.5 in² * 3 in
= 13.5 in³
The answer is:
The volume of the trap is 13.5 in³