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

Ex 12.2, 14 - Chapter 12 Class 10 Areas related to Circles - Part 2

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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) /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

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.