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Perso0408
@Perso0408
May 2019
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Salut jai besoin d’aide merci❤️
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bro33
A.
- Calcul de AH
On a un triangle OAH rectangle en H, on utilise le theoreme de pythagore
OA² = OH² + AH²
15² = 12² + AH²
225 = 144 + AH²
225 - 144 = AH²
81 = AH²
Racine carre de 81 = AH
9 cm = AH
- Calcul de AB
AH x 2 = 18 cm
b. base x hauteur = 9 x 18 = 162 cm²
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Lista de comentários
- Calcul de AH
On a un triangle OAH rectangle en H, on utilise le theoreme de pythagore
OA² = OH² + AH²
15² = 12² + AH²
225 = 144 + AH²
225 - 144 = AH²
81 = AH²
Racine carre de 81 = AH
9 cm = AH
- Calcul de AB
AH x 2 = 18 cm
b. base x hauteur = 9 x 18 = 162 cm²