The perimeter of a semicircular protractor whose radius is ‘r’ is
(a) π + 2r (b) π + r (c) πr (d) πr + 2r
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Last updated at Sept. 8, 2021 by Teachoo
Transcript
Question 21 The perimeter of a semicircular protractor whose radius is ‘r’ is (a) π + 2r (b) π + r (c) πr (d) πr + 2r Perimeter of semicircle = Circumference of semicircle + Diameter AB = 𝟏/𝟐 × 2𝜋r + 2r = 𝜋r + 2r So, the correct answer is (d)
CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [MCQ]
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CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [MCQ]
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