1km = 1000m 1m = 100cm 100 x 1000cm 1cm = 1/ 100000km 1m = 100cm 1cm = 65438

1k m = 1000m； 1m = 100cm 1cm = 1/ 100/ 1000 = 0.0000 1km 1cm = 1/ 100 = 0.0 1m

Reference: myself

1 cm = 1100000 km1cm =1100 m.