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DenFav · Answer 1 · 2017-07-06T08:11:23+0000

Find the angle for arc ED/ θ measured in radians.

If you have angle for arc CD, use this formula for arc length:

(x°/360°)×2πr

If you have angle measured in radians, use this formula to find arc length:

rθ ( θ in radians )

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