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)
Made by
Davneet Singh
Davneet Singh is an IIT Kanpur graduate and has been teaching for 16+ years. At Teachoo, he breaks down Maths, Science and Computer Science into simple steps so students understand concepts deeply and score with confidence.
Many students prefer Teachoo Black for a smooth, ad-free learning experience.
Go ad-free with Teachoo Black
Adblock detected
Skip every ad. Keep every answer.
Teachoo Black gives you a clean, uninterrupted study experience on every page.