square meter (m2)
Square metres.
Metres, to measure its length or width, square metres to measure its area.
if you are after a metric measurement than millimetres^2
The metric unit of the meter would be the appropriate measure of the area of classroom. Calculating area involves multiplying the length (in meters) of the classroom's length and width. Area of the classroom would be in square (^2) meters.
mg
I would use the metric unit is inches
metric unit
Weighing balance is used to measure mass. The metric unit is kilograms.
The second.
Square centimetres: unless I was in production in which case square millimetres.
A microgram.
The Liter isthe Metric liquid unit of measure.