1. Class Notes Geometry Sec 2.7 Objective: Apply concepts of perimeter, area, and volume 1.Review: Find the perimeter of each figure below. 4.8.8 a. 4x - 5 b. 2x + 8 10 3 4

2. 2. Area: The space inside a figure. 3. Area formulas that will be provided on the proficiency test. a. b h A = ½ bh l w b. A = lw b1b1 c. h b2b2 A = ½ h (b 1 + b 2 ) b d. h A = bh

3. 4. Example 1: Use the area formulas to find the area of each figure. 4x + 3 3x3x b. 5 3.2 c. 3 8 6.3 5 6 a. d. 14.3 m 7 m 6 m

4. 5. Example 2: A rectangle’s length is twice its width. Find its area. 6. Example 3: A square has one side that is 12 inches. Find its area. 7. Example 4: A rectangle’s length is four times its width. The rectangle’s area is 64 feet 2. Find the length and the width of the rectangle.

5. 8. Example 5: Find the area of each polygon. a. 8 m 15 m 5 m 12 m 15 m b. 8 m 3 m 7 m