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In Delta ABC, angle B = 90^(@) and BD bo...

In `Delta ABC, angle B = 90^(@) and BD bot AC. If AC = 9 cm and AD = 3` cm then BD is equal to

A

`2 sqrt()2` cm

B

`3 sqrt()2` cm

C

`2 sqrt()3` cm

D

`3 sqrt()3` cm

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