Answer :
1km=1000m
3km=3000m
Compare 5000m and 3000m.
5000m is greater than 3000m so we can say that 5000m is greater than 3km
3km=3000m
Compare 5000m and 3000m.
5000m is greater than 3000m so we can say that 5000m is greater than 3km