Square kilometer: Unit of measure of an area equal to 1 km by 1 km.
Square meter: Unit of measure of an area equal to 1 m by 1 m.
The square centimeter is the standard unit of area. The square centimeter (cm²), the square meter (m²), and the square kilometer (km²) are used for area measurements. When you measure the area of an object, you are making a comparison between the surface being measured and the unit of measurement being used. To find the area of rectangles, you multiply the length of the base times the length of the height, or length × width.
Calculating Areas
The unit for measuring the surface of small areas is the square centimeter (cm²). Area can be computed by multiplying the number of units of length on one side (horizontal) by the number of units of length on the other side (vertical). One unit of length is called length, and the other unit of length is called width. Area = length times width. Using this formula, (A = L · W), find the area for the following shapes.
