km means "kilometer", that is, 1000 meters.
"Mil" stands for thousandths of an inch in measurements.
It has an average diameter of 4879 km.
nanogram
Gram.
The letter "M" stands for meters in measurements.
2
12,000 m
Km stands for kilometer.
Mg = milligrams.
melimeters
Kilometres. What does JHC stand for?
4,879 km and the rest is unknown