1. Area of Composite Figures

2. Find the area of the irregular figure. Use 3.14 for . A = bh A = 16 9 A = 144 Step 1: Separate the figure into smaller, familiar figures. 16 m 9 m 16 m Step 2: Find the area of each smaller figure. EX1) A = (r) 1 2 __ A ≈ (3.14 8 2 ) 1 2 __ A ≈ (200.96) 1 2 __ A ≈ 100.48 Area of the parallelogram: Area of the semicircle: A ≈ 144 + 100.48 = 244.48The area of the figure is about 244.48 m 2. Step 3: Add the area to find the total area.

3. A = lwA = 8 9A = 72 3 yd 9 yd 8 yd 4 yd EX2) A = bh 1 2 __ A = (3 7) 1 2 __ A = (21) 1 2 __ A = 10.5 RectangleTriangle A = 72 + 10.5 = 82.5 2 yd

4. A = lwA = 16 30A = 480 m ² EX3) Rectangle Circle A = 480 - 154 30 m 16 m 7 m    r² A = (7)(7) A = 154 m ² 22 7 A = 22(7) A = 326 m ²

5. Essential Question Describe the process to find how much area to paint a wall with a window.

6. Assignment Page 631 1-10 Omit 9

7. Area of Composite Figures Date ______________

8. Find the area of the irregular figure. Use 3.14 for . Step 1: 16 m 9 m 16 m Step 2: EX1) Area of the parallelogram: Area of the semicircle: Step 3:

9. 3 yd 9 yd 8 yd 9 yd EX2) RectangleTriangle

10. EX3) Rectangle Circle

11. Essential Question Describe the process to find how much area to paint a wall with a window.