Calculate the perimeter of a sector of a circle of raduis...
Calculate the perimeter of a sector of a circle of raduis 12cm and angle 60o.
(12 + 4\(\pi\))cm
(24 + 4\(\pi\))cm
(12 + 6\(\pi\))cm
(24 + 6\(\pi\))cm
Correct answer is B
Perimeter = 2r + \(\frac{\theta}{360}\) x 2\(\pi\)r
= 2(12) + \(\frac{60}{360}\) x 2 x \(\pi\) x 12
= (24 + 4\(\pi\))cm
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