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As shown in the diagram, $BD/DC=2,CE/EA=3,$ and $AF/FB=4.$ Find $[DEF]/[ABC].$

 Jan 27, 2021
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Let triangle ABC be the right-angled triangle with side lengths of 3, 4, and 5 units.

 

[DEF] / [ABC] = 13 / 30

 Jan 27, 2021
edited by Guest  Jan 27, 2021

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