Mathematics for IGCSE & O level - Mensuration (Section 13 - No. 4) | ExamPlay

Mathematics for IGCSE & O level - Mensuration (Section 13 - No. 4)

What is the angle at the center of the circle when using the arc length?

Θ

r

2π

A

Explanation

Arc length is (θ/360) x 2πr.

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