Question

The radius of a scooter wheel is 14cm. How many revolutions does the wheel make if the scooter travels 4.4km? take π=22/7

Please help my bro solve this.. i don't have time thanks​

Answer 1

5000

Explanation:

in order to find how many revolutions, you need to find the circumference of the circle which is 2pi r.

thus, you will get this working out:

circum= 2 times 22/7 times 14

= 88cm

4.4 km = 440000cm

Then, 440000cm divide 88 cm =5000.

Thus, 5000 revolutions.