The length of a rectangle is 3 times its width

The length of a rectangle is 3 times its width. If the width of the rectangle is 6 inches, what is the rectangle's area, in square inches?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #86619