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Question

The given figure is a sector of a circle of radius 20 cm. Find the perimeter of the sector.
(Take π = 3.14)

i


A

55.25 cm

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B

60.93 cm

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C

65.48 cm

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D

70.17

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Solution

The correct option is B

60.93 cm


The circumference i.e , perimeter of a sector of angle P of a circle with radius R is given by

P360 ×2πr +2R

=P360 × 2π R+2R

=60360 × 2π (20)+2(20)

= 20.93 + 40

= 60.93 cm


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