Question

The minute hand of a circular clock is 15 cm. How far does the tip of the minute hand move in 1 hour?
(take $\pi =3.14$)

Answer 1

The length of minute hand is $15cm$

The minute hand make one complete revolution in $1$ hr

So the circumference of circle is

$2\pi r2\times 3.14\times 1530\times 3.14=94.2cm$