Q1 of 52 Page 160

Choose the correct alternative answer for each of the following question.

Find the perimeter of a sector of a circle if its measure is 90° and radius is 7 cm.

Central angle, θ = 90°


Radius, r = 7cm


As we know that,




⇒ l = 11cm


Perimeter of sector =Length of sector + (2× Radius)


Perimeter = 11 + (2 × 7)


Perimeter = 25cm


∴ Option (B) is correct.

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