Question

a jetliner is crusing at an altitude of 31,680 ft. What is the altitude in miles? Show work by using demensional analysis.

Answer 1

would it be 6 miles?

Answer 2

What is this "dimensional analysis" stuff?
there are 5280 feet in a mile

so 31680 feet is 31680/5280 or 6 miles

Yes, you are correct, just don't know why the mumble jumble.