This question cannot be answered sensibly. A kilometre (km) is a measure of distance, with dimensions [L]. A pound (lb) is a measure of mass, with dimensions [M]. Basic dimensional analysis teaches that in most cases you cannot convert between measures with different dimensions without additional information.
1 m = 1m · (1 Km / 1000 m) = 1/1000 Km = 0'001 Km
1 km = 1000 meters 1 meter = 0.001 km
your question doesn't make sense. you are trying to go from a unit of weight to length. If you you mean "how many mm are in 1 km?", then there are 1,000,000 in 1 km
1 kilometer is equal to 1000 meters.
72000 metres make 72 km
1.609 km = 1 mile
It is about 8 lbs per meter, so it is 1/27th of a kilometer or .037 km.
1 km = 1000 metres so 4500 km = 4500000 metres
2240 pounds = 1 Imperial ton
Assuming the question is about 1 MILE, the answer is 1.609344 km.
0.01 km = 1 decametre.
1 light year = 9.46*1012 km or 9.46 trillion km (approx)