Question

The hour hand of a clock is4.5cm long.what distance on the clock does its tip cover in 12hours

Answer 1

heya..

distance cover by tip of hour hand in 12 hour is the Perimeter of circle

Where Radius is length of hour hand .

We know

Perimeter of circle  =  2π r

Here r  = 4.5 cm


Distance cover by tip of hour hand in 12 hour = 2×227× 4.5
= 1987 = 28.28  cm    ( Ans)