You can put this solution on YOUR website! if the hand of the clock is 10 cm long how far will it move within 1 hour
Do it like this one:
the hand of the clock is 2 cm how far will it move within 1 hour
1 hour = 1/12 of a revolution = 30 degs, or pi/6 radians.
Arc length = r*angle
= 2*(pi/6) cm
= pi/3 cm
=~ 1.047 cm
You didn't tell us whether the hand is an hour hand, minute hand or second
If it is the hour hand you're talking about, the tip sweeps out 1 circumference
of the circle it travels through in 1 hour. The formula for the circumference
of a circle is C = 2pr = 2(3.14)(10) = 62.8 cm.
If it is the minute hand, it sweeps through 60 times as many circumferences
as it would if it were the hour hand or 60·62.8 = 3768 cm or 37.68 meters.
If it is the second hand, it sweeps through 60 times as many circumferences
as it would if it were the minute hand or 60·37.68 = 2260.8 meters, or
2.2608 km. a little less than a mile and a half.