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Sagot :

5/8 de 48 =
5/8 x 48 =
30cm
doc perimetre =( l+L)x2
                       = (30+48)x2
                        =156 cm
Longueur  = 48 x 2 = 96 cm
Largeur = 5/8 x 48 = 30 x 2 = 60 cm
60 + 96 = 156 cm
Le périmètre du rectangle est 156 cm.

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