Could someone help me out?
A Ferris wheel car moves from point C to point D on the circle shown below:
What is the arc length the car traveled, to the nearest hundredth?
8.30 feet
11.30 feet
12.41 feet
13.15 feet
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OpenStudy (littlet):
OpenStudy (anonymous):
\[\frac{ s }{ \pi d }=\frac{ \theta }{ 180 }\]
s = arc length
d = diameter
Θ = angle
OpenStudy (anonymous):
s is what you're trying to find.
they gave you d and Θ
OpenStudy (littlet):
alright so.. give me a sec
OpenStudy (littlet):
s/pi35 = 37/180
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OpenStudy (littlet):
is that right?
OpenStudy (anonymous):
yeah, you did it right, but I made a mistake in the equation I put up.
It should be \[\frac{ s }{ \pi d }=\frac{ \theta }{ 360 }\]
then
\[\frac{ s }{ 35\pi }=\frac{ 37 }{ 360 }\]
OpenStudy (littlet):
oh ok. so what would i do next?
OpenStudy (anonymous):
solve for s by mulitplying both sides by 35π
OpenStudy (littlet):
would i first divide 37 by360?
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OpenStudy (anonymous):
yes you can. It generally doesn't matter whether you do multiplication or division first
OpenStudy (littlet):
37/360=.102 x 35 = 3.597
OpenStudy (anonymous):
almost. Don't forget to multiply by the π.
You only mulitplied by 35
OpenStudy (littlet):
oh ok 3.597 x 3.14 = 11.29
OpenStudy (littlet):
witch is 11.30 so it would be B right?
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