Q. 24.6( 11 Votes )
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
A. 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.
We are given that
Circumference of circle with radius R = Circumference of first circle with radius R1 + Circumference of second circle with radius R2
∴ 2πR = 2πR1+ 2πR2
⇒ R = R1+ R2
∴ option A is correct.
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