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manon2901
@manon2901
January 2021
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Bonjour pourriez vous m'aider pour le numéro 69 ?! merci
calculer la valeur exacte du périmètre et de l'aire dun rectangle ABCD de dimensions
AB : racine carrée 7 cm et BC : (5+racine carrée 7) cm
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fransey
Périmètre = (L + l)x2 = (√7 + 5 + √7) ×2 = (2√7 + 5) x2 = 4√7 + 10
aire: Lx l = √7 x (5 + √7) = 5√7 + 7
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aire: Lx l = √7 x (5 + √7) = 5√7 + 7