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Home > INT2 > Chapter 9 > Lesson 9.3.4 > Problem 9-123

9-123.

Jill’s car tires are spinning at a rate of revolutions per minute. If her car tires’ radii are each inches, how far does she travel in minutes?

  1. in

  1. in

  1. in

  1. in

Circumference * * diameter 'revolution'.
In this case, our diameter is inches.
We also know we have revolutions per minute, with minutes given.

By using dimensional analysis, we see that the circumference multiplied by the
total revolutions gives us inches. The answer is D.