Question 2 - CBSE Class 10 Sample Paper for 2022 Boards - Maths Basic [MCQ] - Solutions of Sample Papers for Class 10 Boards

Last updated at April 16, 2024 by Teachoo

In a circle of diameter 42cm ,if an arc subtends an angle of 60° at the centre where π = 22/7,then the length of the arc is

(a) 22/7 cm (b) 11 cm (c) 22 cm (d) 44 cm

This question is
inspired from
Question 14
- CBSE Class 10 Sample Paper for 2021 Boards -
Maths Standard

Transcript

Question 2 In a circle of diameter 42cm ,if an arc subtends an angle of 60° at the centre where 𝜋 = 22/7,then the length of the arc is (a) 22/7 cm (b) 11 cm (c) 22 cm (d) 44 cm
Given
Diameter = 42 cm
∴ Radius = 21 cm
Length of Arc = 𝜽/𝟑𝟔𝟎× 𝟐𝝅𝒓
= (60°)/(360°) × 2 ×22/7 × 21
= 1/6 × 2 × 22/7 × 21
= 22 cm
So, the correct answer is (c)

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, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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