The perimeter of a semicircular protractor whose radius is ‘r’ is

(a) π + 2r   (b) π + r   (c) πr   (d) πr + 2r

Ques 21 (MCQ) - The perimeter of a semicircular protractor whose radiu - CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [MCQ]

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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)

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo