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a) 5 cm² = 500mm²
23cm² = ...2300..mm²
0,5 cm² .50... mm²
b) 4 dm² = 400 cm²
66 dm² = 6600 cm²
0,5 dm² = 50 cm²
c) 6m² = 60000 cm²
78m² = 780000 cm²
0,5m² = 5000 cm²
d) 7km² = 7000000 m²
90km² = 90000000 m²
0,5km² = 500000 m²
2300
50
b)400
6600
50
c)60000
78000
5000
d)7000
90000
500