A B C D is a rectangle with O as any ...

`A B C D` is a rectangle with `O` as any point in its interior. If `a r\ ( A O D)=3\ c m^2a n d\ a r\ ( B O C)=6\ c m^2,` then area of rectangle `A B C D` is: `9c m^2` (b) `12\ c m^2` (c) `15 c m^2` (d) `18\ c m^2`

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