1. PERIMETER, CIRCUMFERANCE AND AREA
Chapter 1.7
PERIMETER, CIRCUMFERANCE AND AREA

2. Ex.1) SQUARE 5˝
5 ˝
P=4s
A=s2

3. Ex.2) RECTANGLE
P = 2b + 2h
A = bh 6˝
10˝

4. Ex. 3) CIRCLE
C = 2r or d
A = r2 6˝
12˝

5. POSTULATE 1-9
If figures 
areas equal
then

6. Rectangles A  B
with sides of 7ft. by 10ft. A 7′
10′ B

7. Area of a region = sum of areas of non-overlapping parts.
POSTULATE 1-10
Area of a region = sum of areas of
non-overlapping parts.

8. 6′ 3′
Ex. 4) FIND THE AREA:

9. Ex. 5) Find the area and perimeter of the figure.

10. Ex. 6) Find the area and perimeter of the figure.

11. Ex. 7) Your pool is 15 ft. wide and 20 ft. long with a 3-ft
Ex. 7) Your pool is 15 ft. wide and 20 ft. long with a 3-ft. wide deck surrounding it. You want to build a fence around the deck. How much fencing will you need?

12. Ex. 8) Find the perimeter