Question

A bicycle wheel of radius 42cm is rolled over a distance of 66m. How many revolution does is make

Answer 1

Answer:

25 revolutions

Step-by-step explanation:

Given

Radius (R) of the wheel = 42 cm

*The distance covered by the wheel in 1 revolution will be equal to it's circumference

Circumference of the wheel = 2πR

=> 2 × 22/7 × 42

=> 264 cm

Now,

Distance covered by the wheel in 1 revolution =264 cm

let the number of revolution required to cover a distance of 66m be x

=>66m = 66 × 100 cm

=>66m = 6,600m

=> x = 6600/264

=> x = 25 revolutions

Answer 2

Step-by-step explanation:

given

radius = 42cm

rolled distance = 66m

primeter=2πr

2×π×42

263cm

revolution=6600×263

17,35,800