determiner l aire du triangle CDE


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Question Number 183620 by a.lgnaoui last updated on 27/Dec/22

$d e t e r m i n e r l a i r e d u t r i a n g l e C D E$
Commented by a.lgnaoui last updated on 27/Dec/22

	Answered by HeferH last updated on 27/Dec/22

	$B y s e e i n g s o m e s i m i l a r t r i a n g l e s,$ $C D E i t s a s p e c i a l r i g h t t r i a n g l e : 3 k, 4 k, 5 k$ $15 (C D E h i p o t e n u s e) = 5 k$ $k = 3$ $A = \frac{9 \cdot 12}{2} = 54 u^{2}$
	Commented by a.lgnaoui last updated on 27/Dec/22

	$O K, t h a n k s$
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