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Calculate the perimeter of a sector of a circle... - JAMB Mathematics 2016 Question

Calculate the perimeter of a sector of a circle of raduis 12cm and angle 60o.

A
(12 + 4\(\pi\))cm
B
(24 + 4\(\pi\))cm
C
(12 + 6\(\pi\))cm
D
(24 + 6\(\pi\))cm
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Correct Option: B

Perimeter = 2r + (\frac{0}{360}) x 2(\pi)r

= 2(12) + (\frac{60}{360}) x 2 x (\pi) x 12

= (24 + 4(\pi))cm

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