Question

The radius of a circular wheel is $1.75m$. The number of revolutions that it will make in covering $11kms$ is:

• A. $1000$
• B. $100000$
• C. $100$
• D. $10$

Answer 1

Answer: (A)

$1000$

Let It take 'n' revolution

Then $n\times 2\pi r=11,000$

$\Rightarrow n\times 2\times \frac{22}{7}\times 1.75=11000$

$\therefore n=1000$