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grade 10 · GEOM-014
Find an arc length
Use the central-angle fraction of a full circle to scale its circumference.
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Fresh problem · seed 1969937706
A circle has radius \(5\). What is the exact length of a \(180^\circ\) arc?
r = 5
180°
Use the same fraction of the circumference.
Choose an answer
\(6\pi\)
\(10\pi\)
\(4\pi\)
\(5\pi\)