If an arc of a circle of radius r subtends an angle 30° at the centre – McqOptions

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1.	If an arc of a circle of radius r subtends an angle 30° at the centre, the length of the arc is:
A.	(r/3) π
B.	(r/9)π
C.	(r/2) π
D.	(r/6) π
Answer» E.

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