.00003, The metric system is a base ten system, so it's fairly easy to grasp. Kilometer ->1000 Meters Hectometer->100 Meters Decameter ->10 Meters Meter Decimeter ->.1 Meters...
1 centimeter = .01 meter1 kilometer = 1000 meters1 centimeter = .00001 km x13 = .00013km
5,021 centimeters=0.05021 kilometers
300 cm 1 meter = 100 cm's
30 cm1 cm = 10 mm1 mm = 0.1 cm