Question

The hour hand of a clock is 4.5 cm long what distance on the clock does it take to cover in 12 hours

Answer 1

Answer:

In 12 hours the hour hand will travel a distance of 339.12 CM

Step-by-step explanation:

Length of Hour Hand = 4.5 CM

Now imagine the hour hand of a clock is the radius of a circle and the distance covered in 1 hour will be the circumference of the clock.

We know that Circumference of a circle = 2$\pi$R

R = Radius = 4.5 CM

SO circumference = 2 x $\pi$ x R

For ease of calculation, we will take $\pi$ = 3.14

Therefore circumference C = 2 x 3.14 x 4.5

ie C = 28.26 CM

So in 1 hour the hour hand will travel 28.26 CM

So in 12 hours the hour hand will travel a distance of = 12 x 28.26

= 339.12 CM