Math - Geometry - Triangle Medians and Altitudes

Points D, E, and F are the midpoints of sides BC, CA, and AB, respectively, of triangle ABC. Points X, Y, and Z are the midpoints of EF, FD, and DE, respectively. If the area of triangle XYZ is 21, then what is the area of triangle CXY?

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  1. Please.

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  2. 63

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