Question

a minute hand of a table clock is 3cm long.how far does its tip move in 20 minutes​

Answer 1

the are of circle travelled by it is (2pi3)cm

its speed is 2×pi×0.03/60 = 0.06pi/60

= 0.01pi/10= 0.001pi m/s

distances travelling in 20 minutes

is 20×60×0.001pi

12 ×0.1pi

1.2pi m