determiner-l-aire-du-triangle-CDE-

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