Answer
No formulas are needed for this question.
Work Step by Step
This question deals with reading a speedometer and determing sig figs. The speedometer has readings in both miles per hour (mph) and kilometers per hour (km/h) The speed indicated in the outer ring is 115 km/hr, which has three sig figs. The speed indicated in the inner ring is 72 mph, which has two sig figs. This difference is created by the fact that the km/h ring has more precise markings. The more precise your measurement, the more sig figs you can have.
