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CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [MCQ]

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Question 28 - CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [MCQ] - Solutions of Sample Papers for Class 10 Boards

Last updated at March 22, 2023 by

If the difference between the circumference and the radius of a circle is 37cm , ฯ€ = 22/7, the circumference (in cm) of the circle is

(a) 154ย  ย  (b) 44ย  ย  (c) 14ย ย  ย  (d) 7

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Question 28 If the difference between the circumference and the radius of a circle is 37cm , ๐œ‹ = 22/7, the circumference (in cm) of the circle is Given that Difference between circumference and the radius of a circle is 37cm Thus, Circumference โˆ’ Radius = 37 cm 2๐œ‹r โˆ’ r = 37 r (2๐œ‹ โˆ’ 1) = 37 r ร— (2 ร— ๐Ÿ๐Ÿ/๐Ÿ• โˆ’ 1) = 37 r ร— (44/7 โˆ’ 1) = 37 r ร— (44 โˆ’ 7)/7 = 37 r ร— 37/7 = 37 r = 37 ร— 7/37 r = 7 cm Now, Circumference of Circle = 2๐œ‹r = 2 ร— 22/7 ร— 7 = 2 ร— 22 = 44 cm So, the correct answer is (b)

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