Metric
As square inches are a measure of area, you can measure any area you like in square inches. However, depending upon the size of the area: square feet may be more appropriate for the size of a room square yards may be more appropriate for a small piece of land acres may be more appropriate for a larger piece of land square miles may be more appropriate for a very large piece of land.
The appropriate measure would depend on whether you wanted to measure its circumference, area, volume, temperature or some other attribute. For this reason, it is not possible to name an appropriate unit.
square yards
centimeter
square centimeters
Measure the linear dimensions in cm and then calculate the area using the appropriate formula. or measure the linear dimensions in metres, calculate the area and mutiply by 10000 or measure the linear dimensions in millimetres, calculate the area and divide by 100.
As square meters are a measure of area, you can measure any area you like in square meters. However: for large areas, eg the area of a piece of land, hectares or square kilometers may be more appropriate; for small areas, eg the area of a piece of paper, square cenitmeters or square millimeters may be more appropriate.
Measure the area on the plan and multiply by the square of the scale.
Square metres for area, metres for linear dimensions.
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.
The measure is the area, which is found by multiplying the length by the width using an appropriate unit of measure. For example: an area measuring 12 feet x 3 feet = 36 square feet.
square centimeters