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in Mensuration by (46.9k points)
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Find the perimeter of a sector of a circle if its measure is 90° and radius is 7 cm. 

(A) 44 cm

(B) 25 cm 

(C) 36 cm 

(D) 56 cm

1 Answer

+1 vote
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Best answer

(B) 25 cm

perimeter of sector = lenght of arc + 2r

= θ/360 x 2πr + 2r

= 90/360 x 2 x 22/7 x 7 2 x7

= 11 + 14

= 25cm

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