Ex 12.2, 14 - Area of a sector of angle p of circle with R - Area of sector of circle

  1. Chapter 12 Class 10 Areas related to Circles
  2. Serial order wise
Ask Download

Transcript

Ex 12.2, 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) /180 2 R (B) /180 R2 (C) /360 2 R (D) /720 2 R2 Area of a sector = /360 2 Where = angle , r = radius of circle Here, we have = p and radius = R Putting these values in formula Area of sector = /360 2 = /360 2 But , these is no such option which is matching with answers So, multiply 2 in numerator and denominator Area of sector = /360 R2 2/2 = /720 2 R2 Hence, option (D) is correct

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.