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OpenStudy (anonymous):
What is the arc length when Ɵ- pi/3 and the radius is 5 cm? A. 10pi/3 cm B. 16pi/3 cm C. pi/3 cm D. 5pi/3 cm
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OpenStudy (anonymous):
when Ɵ = pi/3 I mean.
OpenStudy (ddcamp):
\[Arc\ Length = \theta * r\]
OpenStudy (anonymous):
So its D?
OpenStudy (ddcamp):
Yup!
OpenStudy (anonymous):
Thank you!
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OpenStudy (anonymous):
I have like 3 more if you could try to help
OpenStudy (ddcamp):
If it helps you think about it, the 'arc length' of the entire circle is the same as the perimeter, which is 2*π*r. Since there are 2π radians to get around the circle, it makes sense that the arc length would just be angle (in radians) times the radius.
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