This depends on what unit you are using to measure in. However, area will always be measure in (unit)^2.
You would use area. I would use the meter2. Okay
centimeter
Square kilometres.
square yards
A metric gram would be precise enough of a measurement for a stamp.
millimetres.
Cubic kilometres.
This depends on what unit you are using to measure in. However, area will always be measure in (unit)^2.
You would use area. I would use the meter2. Okay
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.
Square feet. ************************* I would use centimetres to give the area in square centimetres.
Square metre.
square inches
metres
centimeter
acres, hectares, yards2, meters2, etc.