Answer:
A solid figure whose bases or ends have the same size and shape and are parallel to one another, and each of whose sides is a parallelogram.
Step-by-step explanation:
Hi there!
The answer is

We have the following inequality.

We can divide both sides by -6, but because we divide by a negative number, we must flip the sign.

342-72=270
270-72=198
198/2=99
Therefore the width is 99