Răspuns :
7m=70dm=700cm=7000mm
13hm=130dam=130000cm=1300000mm
28km=280hm=2800dam=28000m
13hm=130dam=130000cm=1300000mm
28km=280hm=2800dam=28000m
7m=70dm=700cm=7000mm
13hm=130dam=130000cm=1300000mm
28km=280hm=2800dam=28000m
63hm=6300m=630000cm=6300m
13hm=130dam=130000cm=1300000mm
28km=280hm=2800dam=28000m
63hm=6300m=630000cm=6300m