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The perimeter of the sector with radius 10.5 cm and sector angle 60° is (a) 32 cm (b) 23 cm (c) 41 cm (d) 11 cm

Posted by Swagata Lakshmi Mallik 4 years, 9 months ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Ingle 4 years, 9 months ago

Radius = 10.5 cm and Sector angle = 60°

Perimeter of a sector of a circle = [(theta/360°)*2πr] + (2r)

⇒[(60/360)*2*22/7*10.5] + (2*10.5)

⇒ 1*462/6*7 + 21

⇒ 462/42 + 21

⇒ 11 + 21

⇒ 32 cm

So, the perimeter of sector is 32 cm

1Thank You

Нαяѕнιтα 🖤 4 years, 9 months ago

32 cm

1Thank You

ANSWER

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