convertir :

a) 45 m2 = .....dam 2 = .....hm2 = .....km2
b) 12500 dm2 = .....dam2 = .....cm2 = .....m2

merci d'avance !!!

Question

Grade: Education Subject: mathematiques
convertir :

a) 45 m2 = .....dam 2 = .....hm2 = .....km2
b) 12500 dm2 = .....dam2 = .....cm2 = .....m2

merci d'avance !!!
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Answer (158)

Best Answer
(117)
45m2=0.045dam2=0.000045hm2=0.000000045km2
12500dm2=0.0125dam2=12500000cm2=12.5m2
voilà mon aide bon soir ;)
(326)


Un dam carré est un carré de 10 m x 10m de côté soit 100 m2

45 m2 correspondent donc à 45/100 ou 0,45 dam2.

45 m2 = 0,0045 hm2 ( = 45/10 000 )

45 m2 = 0,000045 km2 ( = 45/ 1000 000 ).

1m2 = 100 dm2

12500 dm2  = 125 m2  = 1,25 dam2 = 1 250 000 cm2.

Voilà, j'espère t'avoir aidé.