# 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 = RB. R1 + R2> RC. R1 + R2< RD. Nothing can be said with certainty.

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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