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Lorieducatel
@Lorieducatel
May 2019
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Bonjours je n'y arrive pas pouvez-vous m'aider s'il vous plaît merci
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Salut !
périmètre du rectangle = 4 km = 16 carreaux
donc : 1 carreau = 4 km ÷ 16 = 0,25 km = 250 m
base du triangle = 7 carreaux = 7 × 250 m = 1 750 m = 1,75 km
hauteur du triangle = 4 carreaux = 4 × 250 = 1 000 m = 1 km
donc : aire du triangle = 1,75 × 1 ÷ 2 = 0,875 km²
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bonjours , j'ai un DM a rendre pour la rentrer et je n'y arrive pas pouvez-vous m'aider a l'exercice 1 s'il vous plaie merci d'avance
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périmètre du rectangle = 4 km = 16 carreaux
donc : 1 carreau = 4 km ÷ 16 = 0,25 km = 250 m
base du triangle = 7 carreaux = 7 × 250 m = 1 750 m = 1,75 km
hauteur du triangle = 4 carreaux = 4 × 250 = 1 000 m = 1 km
donc : aire du triangle = 1,75 × 1 ÷ 2 = 0,875 km²