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In trapezium ABCD, AB || CD and AB = 2 CD. Its diagonals intersect at O. If the area of `Delta AOB = 84 cm^(2)`, then the area of `Delta COD` is equal to

A

`21 cm^2`

B

`42 cm^2`

C

`72 cm^2`

D

`26 cm^2`

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CHAMPION PUBLICATION-2015 TIER-II PAPER(17)-EXERCISE
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