Question

The radius of a wheel of a bike is 35cm, how many times will it revolve in covering distance of 3.3Km.

Answer 1

Given:

Radius of a wheel of bike is 35 cm.

To find:

Number of times the wheel will rotate in-order to cover distance of 3.3 km.

Calculation:

Circumference of the wheel be C

$C = 2 \times \pi \times r$

$= > C = 2 \times \dfrac{22}{7} \times 35$

$= > C = 44 \times 5$

$= > C = 220 \: cm$

Now , Total distance covered by the wheel be D

$D = 3.3 \: km = 330000 \: cm$

No of rotations required :

$\rm{ \therefore \: no. \: of \: rotation = \dfrac{D}{C} }$

$\rm{ = > \: no. \: of \: rotation = \dfrac{330000}{220} }$

$\rm{ = > \: no. \: of \: rotation = 1500}$

Hence the total number of rotations will be 1500.