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If AB and CD are two chord of a circle i...

If AB and CD are two chord of a circle intersecting at right angles in P and O is centre, then `overline(PA)+overline(PB)+overline(PC)+overline(PD)=`

A

`2overline(PO)`

B

`2overline(OP)`

C

`overline(OP)`

D

`overline(PO)`

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A
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