In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find the length of the arc.
We have r = 21 cm and θ = 60°
Length of arc `= theta/360^circxx2pi"r"xx2xx22/7xx21 = 22 "cm"`
Hence, the length of the arc of the circle is 22 cm.
Concept: Circumference of a Circle
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