Geometryeasy · Past Paper
If an arc subtends an angle of 60 degrees at the center of a circle of radius 21 cm, find the length of the arc.
A11 cm
B22 cm
C44 cm
D66 cm
✓ Correct Answer: B — 22 cm
Arc length = (theta/360) * 2 * pi * r = (60/360) * 2 * (22/7) * 21 = (1/6) * 132 = 22 cm.
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