Ex 11.1, 14 (MCQ) - Chapter 11 Class 10 Areas related to Circles

Last updated at April 16, 2024 by Teachoo

Transcript

Ex 11.1, 14
Tick the correct answer in the following :
Area of a sector of angle p (in degrees) of a circle with radius R is
(A) 𝑝/180 × 2πR (B) 𝑝/180 × πR2 (C) 𝑝/360 × 2πR (D) 𝑝/720 × 2πR2
Area of a sector = θ/360× 𝜋𝑟2
Where θ = angle , r = radius of circle
Here, we have
𝛉 = p and radius = R
Putting these values in formula
Area of sector = 𝜃/360×𝜋𝑅2
= 𝒑/𝟑𝟔𝟎×𝝅𝑹𝟐
But , these is no such option which is matching with answers
So, multiplying 2 in numerator and denominator
Area of sector = 𝑝/360×πR2×2/2
= 𝒑/𝟕𝟐𝟎× 𝟐𝛑𝐑𝟐
So, the correct answer is (d)

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.

Hi, it looks like you're using AdBlock :(

Displaying ads are our only source of revenue. To help Teachoo create more content, and view the ad-free version of Teachooo... please purchase Teachoo Black subscription.

Please login to view more pages. It's free :)

Teachoo gives you a better experience when you're logged in. Please login :)

Solve all your doubts with Teachoo Black!

Teachoo answers all your questions if you are a Black user!