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December 20, 2014

December 20, 2014

Posted by **Anonymous** on Wednesday, July 6, 2011 at 6:16pm.

- geometry -
**Reiny**, Wednesday, July 6, 2011 at 8:48pmthe ratio of areas of two similar shapes is proportional to the square of their corresponding sides

so area DEF/5 = 6^2 / 2^2 = 36/4 = 9/1

area DEF = 45

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