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How far to the nearest hundreth cm, does the tip of the hour hand on a clock move

dtippitt

New member
Nov 11, 2018
5
How far to the nearest hundreth cm, does the tip of the hour hand on a clock move in exactly 3 hours if the hour had is 2.00 cm long?

I think you are supposed to use arc length formula.

This is what I got so far:

s=r(radian symbol) = 3=1(radian symbol)
 

skeeter

Well-known member
MHB Math Helper
Mar 1, 2012
644
Re: Possible trignomery and distance formula

How far to the nearest hundreth cm, does the tip of the hour hand on a clock move in exactly 3 hours if the hour had is 2.00 cm long?

I think you are supposed to use arc length formula.

This is what I got so far:

s=r(radian symbol) = 3=1(radian symbol)
the hour hand of an analog clock moves 1/12 of a revolution in one hour.

one revolution is 2pi radians

$s = r \cdot \theta$

take it from here?
 

Olinguito

Well-known member
Apr 22, 2018
251
How far to the nearest hundreth cm, does the tip of the hour hand on a clock move in exactly 3 hours if the hour had is 2.00 cm long?
In 3 hours, the hour hand turns through a right angle, i.e. a quarter of a circle. What is a quarter of the circumference of a circle of radius 2 cm?