The given figure is a sector of a circle of radius 20 cm. Find the perimeter of the sector. $T a k e π = \frac{22}{7}$

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Solution

The correct option is B
61

We know that circumference i.e , perimeter of a sector of angle $P^{\circ}$ of a circle with radius R

$= \frac{P^{\circ}}{360} \times 2 π R + 2 R = \frac{60^{\circ}}{360} \times 2 π (20) + 2 (20) = 61 c m$

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