PDF File

AREA

To find the amount of coverage, we find area.  Area is measured in square units.  Places around that home that requires the calculation of area might be determining the amount of carpet to cover a floor, determining the amount of the yard over which to plan a garden, or determining the amount of material needed to make a tablecloth.

We will compare finding the area of a rectangle with finding the area of a triangle, and also look at finding the areas of a square and a parallelogram.

Area of Rectangle and Triangle The area of a rectangle is the product of its length and width.  Area is a measurement of coverage and is measured in square units. Sometimes the length is called the base and the width is called the height.  The formula can them be written as A = b Í h.   A triangle's area is equal to half the area of a rectangle with the same base and height.

Area of Square and Parallelogram The area of a square is the product of its length and width.  Since squares have sides of equal length, area of a square is the product of its length (side) and its width (side).Area is a measurement of coverage and is measured in square units. The area of a parallelogram can be rearranged into the shape of a rectangle if the parallelogram is cut along a perpendicular height from the top to its base.  Thus, a formula for area can be formed from the rectangle's area formula.  The area of a parallelogram is the product of its base and height.  The height of a parallelogram is the length of a perpendicular line from the top of the parallelogram to the base. Area is a measurement of coverage and is measured in square units.

Below are additional educational resources and activities for this unit.

Click on the icon to find and practice topics for this unit.

Unit 25 Area Worksheet

Unit 25 Area of Triangles Worksheet