A bicycle with tires 68cm in diameter travels 9.2km. How many revolutions do the wheels make?

I'm guessing for this question I have to use the work done formula, am I right?

1 Answer
Apr 7, 2018

4219 revolutions

Explanation:

diameter= 68cm
r=682cm=0.34m
distance travelled=9.2 km=9200 m
circumference of the tire=2πr=23.140.34=2.13m
so, 1rev. 2.13 m
2.13m 1rev
1m 12.13rev
9200m12.139200=4219 revolutions. (approx)