Question 14 - CBSE Class 10 Sample Paper for 2021 Boards - Maths Standard

Last updated at Oct. 23, 2020 by Teachoo

In a circle of diameter 42cm,if an arc subtends an angle of 60˚ at the centre where π =22/7, then what will be the length of arc.

Note : This is similar to Ex 12.2, 5 ( i ) of NCERT – Chapter 12 Class 10

Check the answer here https:// www.teachoo.com /1854/547/Ex-12.2--5---In-a-circle-of-radius-21-cm--an-arc-subtends-60/category/Ex-12.2/

Transcript

Question 14 In a circle of diameter 42 cm, if an arc subtends an angle of 60˚ at the centre where 𝜋 = 22/7, then what will be the length of arc.Length of Arc APB = 𝜃/360× (2𝜋𝑟) = (60°)/(360°) × 2 ×22/7 × 21 = 1/6 × 2 × 22/7 × 21 = 22 cm

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.