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Sagot :

Bonjour,

b) 1 L = 1 000 mL

540 L = 540 000 mL

c) 1 km³ = 1 000 000 dam³

498 km³ = 498 000 000 dam³

d) 1 dm³ = 1 000 cm³

15 dm³ = 15 000 cm³

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