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18dm² = 1800cm²
6m²= 60000cm²
6m²= 600dm²
70dm²= 7000cm²
300m²= 30000dm²
120dm²= 12000cm²
7dm²= 70000mm²
230dm²= 2300000mm²
:)
18dm² =18*1dm*1dm=18*10cm*10cm=1800cm²
6m²= 6*1m*1m=6*100cm*100cm=60 000cm²
6m²=6*1m*1m=6*10dm*10dm=600dm²
70dm²=70*1dm*1dm=70*10cm*10cm=7000cm²
300m²=300*1m*1m=300*10dm*10dm=30 000dm²
120dm²=120*1dm*1dm=120*10cm*10cm=12 000cm²
7dm²=7*1dm*1dm=7*100mm*100mm=70 000mm²
230dm²=230*1dm*1dm=230*100mm*100mm=2 300 000mm²