Question

A wheel covers a distance of 22 km. The radius of the wheel is $\frac{7}{4}$ meter. Find the number of revolutions taken by the wheel.

• A. 1000
• B. 2000
• C. 1800
• D. 2400

Answer 1

Answer:

B. 2000

Given that,

Radius of a wheel (r) = $\frac{7}{4} m$

The distance covered by wheel = 22 km = 22000 m

The circumference of wheel = 2πr = $2\times{\frac{22}{7}}\times{\frac{7}{4}}$

The number of revolutions taken by the wheel = $\frac{distance}{circumference}$

= $\frac{22000}{11}=2000$