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v47
@v47
June 2021
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Le périmètre d'un rectangle est 31.6m la longueur mesure 3 m de plus que la largeur.
1)Ecrire une équation permettant de calculer la longueur de ce rectangle.
2)Résoudre cette équation
3)En déduire la largeur de ce rectangle
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winner123
Verified answer
Bonsoir
périmètre = 2 longueurs + 2 largeurs
2( x + x + 3 ) = 31.6
2 x + 2 x + 6 = 31.6
4 x = 31.6 - 6
4 x = 25.6
x = 6.4
largeur = 6.4
longueur = 9.4
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Verified answer
Bonsoirpérimètre = 2 longueurs + 2 largeurs
2( x + x + 3 ) = 31.6
2 x + 2 x + 6 = 31.6
4 x = 31.6 - 6
4 x = 25.6
x = 6.4
largeur = 6.4
longueur = 9.4