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I am trying to work out the radius of a sector with arc length of 47.6 and a angle of 210. I tried a formula which was $r=\frac{L}{2π}\times \frac{360}{\theta}$ I saw but kept ending up with 128.176

Thank you for reading.

ewihjfio
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1 Answers1

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In a circle, $l = r\theta$ where $\theta$ is in radians.

Therefore, $r = {l\over \theta}$ where $\theta = {7\pi\over 6}$ and $l=47.6$. This gives $r = 12.98$

SS_C4
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