Perimeter is thedistance around an object. In this chapter you’ll work
with area, which is the amount of surface covered by an object. For exam-
ple, the number of tiles on a kitchen floor would be found by using an area
formula, while the amount of baseboard used to surround the room would
be found by using a perimeter formula. Perimeter is always expressed in
linear units. Area is always expressed in square units.
If the perimeter of a figure is the outline of a figure, then the areaof a
figure is what is inside the outline; area is the amount of two-dimensional
space that a planar figure occupies.
As you’ll see on the next page, area is measured in two-dimensional
squares. Therefore, the notation for area always includes an exponent of
two to indicate two-dimensional space. For example, 40 square meters
means 40 squares that are one meter by one meter. This is written as 40m^2.
jacob rumans
(Jacob Rumans)
#1