1. Area of Shapes

2. Squares
Formulas: A = s2 , L x W, or B x H

3. Triangles
Formula: A= 1/2(B x H)
B= Base
H= Height

4. Circles
Formula: A= πr = 3.14

5. Trapezoid
Formula: A=1/2H(b1 + b2)

6. Where can I use it?

7. Area in Construction You Are the Contractor:
You contract to install carpet in a living room. The room is 12 feet wide and 15 feet long. A closet in the room is three feet wide and three feet deep. How many square yards of carpet are needed to cover the floor and closet? (1 sq. yd. = 9 sq. ft.) Carpet costs $7.59 per square yard. You charge your client $11.00 an hour for labor and delivery. You estimate the job will take four hours. What will be your total costs for this job?