centimeters is the best unit but millimeters can also be used.
meter
Kilometres
Metric system: meters; customary system: feet
The area of a rectangle is (length) multiplied by (width). The units don't matter. Just make sure that 'length' and 'width' are both measured in the same unit, whatever the unit is.
Yards if you work in imperial units or metres if you work in metric units
The width of a pencil would be the metric unit of centimeters
5 km
Width is a length or distance. The unit of length is the meter.
centimeter
the metric system
Inches.
mm
meter
It depends on the width of the desk. You could use centimeters or meters.
centimetre
i dont know thats why im asking you
mm2