The measurements that have the units in inches are the measurement of the length, height, or width. In this case, they are the length of the mailbox and the height of the post holding the mailbox.
The other measurements have the measure of an area, and it is represented by square inches (in^2), and the volume by cubic inches (in^3).
Then, the measurements that have the unit in inches are:
1. Measurement 2 ( the length)
2. Measurement 3 ( the height)
Then, the answer is Measurements 2 and 3.