2100 millimetres
21 feet equals 6.4008 metres.
2,100 cm = 21 meters
210m
21 350 what? If it's 21 350 meters, that equals 21.35 kilometers.
2.1 centimeters=21 millimeters
230 millimeters
21 decimeters = 2.1 meters 214 centimeters = 2.14 meters 2142 millimeters = 2.142 meters If all these measurements were accurately taken, the millimeters would be most precise because it gives the most (hopefully correct) numbers after the decimal point when you compare everything in meters.
Inch and centimeter are both linear units of measurement. They are used to measure small distance. The conversion is done by multiplying the inch measurement by 2.54. The above unit in centimeters equals 2.1 cm (Approximately).
21 meters = 2,100 centimeters
21 meters = 826.771654 inches
21 millimeters is 2.1 centimeters.
Since there are no units specified for 21, I will just solve for all.21 Kilometers = 2100000 cm21 Hectometers = 210000 cm21 Decameters = 21000 cm21 Meters = 2100 cm21 Decimeters = 210 cm21 Centimeters = 21 centimeters21 Millimeters = 2.1 centimeters