Question

The diameter of a wheel of cycle is 21cm.it moves slowly along a road .how far will it go in 500 revolutions

Answer 1

Here

D=21 cm

Radius = d/2

So radius = 21/2

Let's find how much it travel in one revolution

So distance covered in one revolution is

$2\pi \: r$

Then

2*22/7*21/2

=66 m

So for 500 revolution it will be

500*66=33000 m

Answer 2

Answer:

32986.72 cm / 329.87 m / 105π m / 10500π m

Step-by-step explanation:

The circumference of the wheel is calculated by πd. So the circumference is 21π cm. Because there are 500 revolutions, the distance is 21π x 500 = 10500π cm. Then it can be left in terms of cm or m or in terms of π.