Question

The radius of a wheel is $0.25m$. How many rounds will it take to complete the distance of $11km$?

• A. $7000$
• B. $8000$
• C. $9000$
• D. $6000$

Answer 1

Answer: (A)

$7000$

Distance covered in one round $=$ Circumference of wheel

$\Rightarrow 2\pi r=2\times \frac{22}{7}\times 0.25=\frac{11}{7}m$
$\therefore$ Number of rounds to cover $11km=\frac{\text{Total distance covered}}{\text{Distance covered in one round}}=\frac{11\times 1000}{\frac{11}{7}}=7000$