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OpenStudy (anonymous):
Answer the questions about arc length If the circumference of the circle below is 25cm, what is the length of Arc AB, to the nearest hundredth?
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OpenStudy (anonymous):
|dw:1415765164613:dw|
OpenStudy (nikato):
A circle is 360 And 70/360 = 7/36 So that "slice" is 7/36 of a circle So What's (7/36)(25)?
OpenStudy (caozeyuan):
so 2pir=25
OpenStudy (caozeyuan):
r=25/2pi
OpenStudy (caozeyuan):
s=r*theta
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OpenStudy (caozeyuan):
so you can convert degrees to radians then you re done
OpenStudy (anonymous):
\[7\div36(25) equals 4.8611111111\] @nikato is this correct
OpenStudy (nikato):
Yes. That's what I got too
OpenStudy (anonymous):
ok thank you @nikato
OpenStudy (nikato):
No problem
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