In the pair of similar trapezoids, what is the length of side DA?

asked Mar 20, 2016 50.6k views

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$(|EH|)/(|GH|)=(|AD|)/(|CD|)\\\\ (15)/(20)=(|AD|)/(60)\\ (3)/(4)=(|AD|)/(60)\\ 4|AD|=180\\ |AD|=45$

Alijah answered Mar 25, 2016

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