PM is a median of the DeltaPQR. PM is ex...

PM is a median of the `DeltaPQR`. PM is extended to N such that PM = MN. If O be the mid-point of MN and if area of `DeltaPQR` be 40 sq.cm, then the area of the `DeltaQOM` is-

A

20 sq.cm

B

10 sq.cm

C

25 sq.cm

D

30 sq.cm

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