The perimeter of the sector of a circle of radius 21 cm which subtends an angle of 60° at the centre of circle, is:... | MCQ 1m | Maths | SuperPadhai

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MCQ1 markYear: 2024EasyCBSE Class 10

circlessectorperimeter

Question

The perimeter of the sector of a circle of radius 21 cm which subtends an angle of

60°

at the centre of circle, is:

Solution

1

Arc length

= \frac{60}{360} \times 2 \times \frac{22}{7} \times 21 = 22

cm. Perimeter

= 22 + 2 \times 21 = 64

cm

+1 mark

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