What is the length of the arc of a circle of radius \( \mathrm{P} \...

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What is the length of the arc of a circle of radius
\( \mathrm{P} \)
\( 30 \mathrm{~cm} \) which subtend an angle \( \frac{\pi}{6} \) at the centre?
W
(1) \( 11.7 \mathrm{~cm} \)
(2) \( 14.7 \mathrm{~cm} \)
(3) \( 16.7 \mathrm{~cm} \)
(4) \( 15.7 \mathrm{~cm} \)
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