Area
is the number of square
units needed to cover a surface.
You can use a
formula to find the
area of a square,
rectangle,
right triangle, and a parallelogram.
Area is always answered in square units.
Example 1:
Rectangle
Find the
area of the rectangle using
the formula.
To find the
area of a rectangle,
multiply the length x width
Area = length x width
The length = 6 ft
The width = 2 ft
Area = 6 ft x 2 ft
The
area
is 12 square feet.
Example 2:
Square
Find the
area of the square using
the formula.
To find the
area of a square,
multiply the side x side
Area = side x side
Area = 3 ft x 3 ft
The
area
is 9 square feet.
Example 3:
Right Triangle
Find the
area of the right triangle using the formula.
Area = 1/2 x base x height
A= 1/2 x b x h
A= 1/2 x 8m x 5m
A= 1/2 x 40 square meters
A= 20 square meters
The
area
is 20 square meters.
Example 4:
Parallelogram
Find the
area of the parallelogram using the formula.
Area = base x height
A= b x h
A= 4 units x 3 units
A= 12 square units
The
area
is 12 square
units.
Remember:
formulas
Rectangle : A = l x w
Square: A = s x s
Right triangle: A = 1/2 b x h
Parallelogram: A= b x h
