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Patriciajacque
@Patriciajacque
May 2019
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Bonsoir qqn pourrais m'aidez svp?
Merci d'avance
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Commentaires (1)
Bonsoir
BC² = 300 ² + 400 ²
BC² = 250 000
BC =√250 000 =
500 m
CB/CE = CD/Ca = BD/EA
500/ce = 400/1000
Ce = 5 00000/400 =
1 250 m
EA² = 1250² - 1000 ² = 562 500
Ea = √ 562 500 =
750 m
DBCEA = 300 + 500 + 1 250 + 750 =
2 800 m
1 votes
Thanks 0
Galactus93
BC = AB°2 + AC°2
= 300°2 + 400°2
= 90 000+160 000
= 250 000
= √250 000
BC = 500
DE = AB ÷ (-) 0,4
= 300 ÷ 0,4
= 750
CD = BC ÷ 0,4
= 500 ÷ 0,4
= 1250
DB = 300
1250+750+500+300= 2800m ( 2,8 km ).
1 votes
Thanks 0
Galactus93
Et moi ?
Galactus93
Derien , c'est rien .
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Lista de comentários
BC² = 300 ² + 400 ²
BC² = 250 000
BC =√250 000 = 500 m
CB/CE = CD/Ca = BD/EA
500/ce = 400/1000
Ce = 5 00000/400 = 1 250 m
EA² = 1250² - 1000 ² = 562 500
Ea = √ 562 500 = 750 m
DBCEA = 300 + 500 + 1 250 + 750 = 2 800 m
= 300°2 + 400°2
= 90 000+160 000
= 250 000
= √250 000
BC = 500
DE = AB ÷ (-) 0,4
= 300 ÷ 0,4
= 750
CD = BC ÷ 0,4
= 500 ÷ 0,4
= 1250
DB = 300
1250+750+500+300= 2800m ( 2,8 km ).