Odpowiedź:
1km2= 1000m*1000m=1000000m2
1km2=10000dm*10000dm=100000000dm2
1km2=100000cm*100000cm=10000000000cm2
1mm2=1000000mm*1000000mm=1000000000000cm2
1m2=10dm*10dm=100dm2
1m2=100cm*100cm=10000cm2
1m2=1000mm*1000mm=1000000mm2
1dm=10cm*10cm=100cm2
1dm2=100mm*100mm=100mm2
Szczegółowe wyjaśnienie: