Question

The radius of a cycle wheel is 35 cm. Find the number of turns required to cover a distance of 1540 m.

• A. 600
• B. 850
• C. 500
• D. 700

Answer 1

The correct option is D 700

Given, radius = 35 cm

Circumference of a circle of radius r
$=2\times \pi \times r$

Therefore, circumference of the wheel
$=2\times \frac{22}{7}\times 35=220cm$
$=2.2m$

In one rotation, the cycle wheel covers a distance of 2.2 m.

So, number of rotations required to cover 1540 m
= $\frac{1540}{2.2}=700\text{rotations}$