In Figure, there are two concentric circ...

In Figure, there are two concentric circles with centre `O` of radii `5 cm and 3 cm` . From an external point `P ,` tangents `PA and PB` are drawn to these circles. If `A P=12 cm ,` find the length of `BPdot`

A

12 cm

B

`12 sqrt(3)`

C

`4 sqrt(10)`

D

`10 sqrt(4)`

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The correct Answer is:

C

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