Question

The minute hand of a circular clock is 15cm long .How far does the tip of the minute hand move in 1 hour .

Answer 1

in 1 hr the clock will complete 1 rotation

length of the minute hand of clock=radius of clock=15cm

circumference=2πr

=2×3.14×15cm

=94.2

therefore,

the tip travels 94.2cm in 1 hour.

Answer 2

movement of the minute hand in 1hr = 360°
the tip movement =length of the arc
=2πr*360/360=22/7*15*2*1=94.28cm