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 If each side of △ACD above has length 3 and if AB has length 1, what is the area of region BCDE?



9/4

~$\frac{7}{4}$~ ~$\sqrt{3}$~

~$\frac{9}{4}$~ ~$\sqrt{3}$~

~$\frac{7}{2}$~ ~$\sqrt{3}$~

6+ ~$\sqrt{2}$~

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GMATAdvanced-PS