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In the given figure. Two identical circl...

In the given figure. Two identical circles of radius 4 cm touch each other. A and B are the centres of the two circles. If RQ is a tangent to the circle, then what is the length (in cm) of RQ?

A

`3sqrt(3)`

B

`2sqrt(6)`

C

`4sqrt(2)`

D

`6sqrt(2)`

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