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Circumference of a Circle

If the sum of...

Question

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 _________.

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None of these

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Solution

The correct option is A

$2 π R_{1} + 2 π R_{2} = 2 π R$

$(R_{1} + R_{2}) 2 π = 2 π R$

$R_{1} + R_{2} = R$

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