Question

The minute hand of a circular clock is 14 cm long. How far does the tip of the minute hand move in 1 hour?
$(Take\pi =\frac{22}{7})$

• A. 56 cm
• B. 66 cm
• C. 84 cm
• D. 88 cm

Answer 1

The correct option is D 88 cm

In one hour, the minute hand of the clock completes one round.
The distance covered by the minute hand is equal to the circumference of the circle.
The radius of the circle (r) = 14 cm
Circumference of a circle of radius $r$ is $2\pi r$.
$\therefore \text{Circumference of the clock}=2\times \frac{22}{7}\times 14=88cm$
Therefore, the tip of the minute hand moves 88 cm in 1 hour.