Răspuns:
Explicație pas cu pas:
1 cm=10 mm
1 dm=10cm=100mm
1m=10dm=100cm=1000mm
1 dam=10m=100dm=1000cm=10.000mm
1hm=10dam=100m=1000dm=10.000cm=100.000mm
1km=10hm=100dam=1000m=10.000dm=100.000 cm=1000.000mm
