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Two Circles Touching Internally and Externally

Two circles o...

Question

Two circles of radius $r_{1}$ and $r_{2}$ are drawn. The distance between their centres is $d$ .The condition that both touch each other externally.

A

r_{1} + r_{2} = d

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B

r_{1} - r_{2} = d; r_{1} r_{s} 2

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C

r_{1} + r_{2} > d

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D

r_{1} - r_{2} > d; r_{1} > r_{2}

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Solution

The correct option is D $r_{1} + r_{2} = d$
For external touching circles, $r_{1} + r_{2} = d$
So, option A is correct.

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