If the sum of the circumferences of two circles with radii R 1 and R 2 is equal to the circumference of a circle of radius R, then

(A)R 1 + R 2 = R

(B) R 1 + R 2 > R

(C) R 1 + R 2 < R

(D) Nothing definite can be said about the relation among R 1 , R 2 and R.

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  1. Chapter 12 Class 10 Areas related to Circles (Term 1)
  2. Serial order wise

Transcript

Question 4 If the sum of the circumferences of two circles with radii R1 and R2 is equal to the circumference of a circle of radius R, then R1 + R2 = R (B) R1 + R2 > R (C) R1 + R2 < R (D) Nothing definite can be said about the relation among R1 , R2 and R. Given that sum of the circumferences of two circles with radii R1 and R2 is equal to the circumference of a circle of radius R Therefore, 2๐œ‹๐‘…_1+2๐œ‹๐‘…_2= 2๐œ‹๐‘… ๐‘น_๐Ÿ+๐‘น_๐Ÿ=๐‘น So, the correct answer is (A)

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.