Q. 113.5( 2 Votes )

If the sum of circumferences of two circles of radii R1 and R2 is equal to the circumference of a circle of radius R, then which of the following choices is correct?
A. R1 + R2 = R

B. R1 + R2> R

C. R1 + R2< R

D. Nothing can be said with certainty.

Answer :

Given: The sum of circumferences of two circles of radii R1 and R2 is equal to the circumference of a circle of radius R.


We know that circumference of the circle = 2πr


2πR1+2πR2 = 2πR


2π (R1+R2) = R


R1+R2 = R

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