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Sagot :

Réponse:

Bsr.

a) 54 m²= 50000000mm²

b) 48 m²= 0,48 dam².

c) 5 km²= 50000 dam²

d) 879 cm²= 8,79 dm²

e) 35200 mm²=0,000352 dam²

f) 5,4 hm²= 540 dam²

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