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Alizeemnr
@Alizeemnr
April 2019
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Dm de 3 eme quelqu'un pourrait m'aider svp
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Verified answer
Bonjour,
il faut calculer la surface à peindre
aire BCD = (7,5*3)/2 = 11,25m²
aire BDEA = 7,5*6 = 45m²
surface à peindre : 56,25m²
un pot de peinture couvre 24m²,
il lui faut 56,25/24 = 2,343..
il lui faut 3 pots
coût total : 343,50e
elle paye 2/5 :
343,5*2/5 = 137,4
il reste à payer :
343,5-137,40 = 206,1e
elle paye 3 mensualités de
206,1/3 = 68,7e
2 votes
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Verified answer
Bonjour,il faut calculer la surface à peindre
aire BCD = (7,5*3)/2 = 11,25m²
aire BDEA = 7,5*6 = 45m²
surface à peindre : 56,25m²
un pot de peinture couvre 24m²,
il lui faut 56,25/24 = 2,343..
il lui faut 3 pots
coût total : 343,50e
elle paye 2/5 :
343,5*2/5 = 137,4
il reste à payer :
343,5-137,40 = 206,1e
elle paye 3 mensualités de
206,1/3 = 68,7e