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AB = 2r is the diameter of a circle. If ...

`AB = 2r `is the diameter of a circle. If a chord CD Interests AB at right angle at a point P in the ratio `1:2`, then CD is equal to

A

`(sqrt(2d))/(3)`

B

`(2d)/(3)`

C

`(2sqrt(2d))/(3)`

D

`(2sqrt(3d))/(3)`

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