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vanesse1
@vanesse1
January 2021
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Un rectangle a une aire de 29.52cm² et un côté de 8 cm de long Calculer la longueur des ses diagonales , Aider moi svp ! mERCI D AVANCE
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kartonplein
Si on note x , l'autre coté du rectangle, on peut écrire
8x = 29.52
=> x = 29.52/8 = 3.69 cm
Si on note d la longueur de la diagonale, le théorème de Pythagore permet d'écrire:
d² = 8² + 3.69²
=>d²=77.61
=>d =8.81 cm
Sauf erreur de ma part ;)
2 votes
Thanks 1
vanesse1
merci
kartonplein
Je t'en prie
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Lista de comentários
8x = 29.52
=> x = 29.52/8 = 3.69 cm
Si on note d la longueur de la diagonale, le théorème de Pythagore permet d'écrire:
d² = 8² + 3.69²
=>d²=77.61
=>d =8.81 cm
Sauf erreur de ma part ;)