If you mean measure height then it would be the metre if you mean measure weight it would be Kilograms
It depends, are you trying to measure the height, weight, temperature or speed of the child?
You would measure the height in metres, and the weight in kilograms.
To measure weight, use kilograms
To measure height, use meters
You would use kilograms.
meter
meters
metric
feet squared
"liter"
The customary unit is called the Btu, or British thermal unit. The metric unit is the joule. The joule is the standard metric unit for measuring any type of energy, including heat.
cc
metric unit
kilograms
A microgram.
meters
Litres.
Tonnes
miles?
Millimeters
The metric unit of length is the 'meter'.
You would use meters.
I would use centimetres.
You would use a ruler and measure in millimeters or centimeters.