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In a trapezium ABCD, O is the point of i...

In a trapezium ABCD, O is the point of intesection of AC and BD, AB||CD and `AB = 2xx CD`. If the area of `triangleAOB= 84cm^(2)` . Find the area of `triangleCOD`.

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The correct Answer is:
`21cm^(2)`.
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