Geometrymedium · Past Paper
If the length of an arc of a circle of radius 14 cm is 22 cm, find the central angle subtended by it.
A45 degrees
B60 degrees
C90 degrees
D120 degrees
✓ Correct Answer: C — 90 degrees
Arc length = (theta/360) * 2 * pi * r => 22 = (theta/360) * 2 * (22/7) * 14 => 22 = (theta/360) * 88 => theta = 90.
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