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Splash Screen. Five-Minute Check (over Lesson 11–5) Main Idea and Vocabulary Example 1: Find the Area of a Composite Figure Example 2: Real-World Example. Lesson Menu. Find the areas of composite figures. composite figure. semicircle. Main Idea/Vocabulary.
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Five-Minute Check (over Lesson 11–5) Main Idea and Vocabulary Example 1: Find the Area of a Composite Figure Example 2: Real-World Example Lesson Menu
Find the areas of composite figures. • composite figure • semicircle Main Idea/Vocabulary
Find the Area of a Composite Figure Find the area of the figure in square centimeters. The figure can be separated into a rectangle and a triangle. Find the area of each. Example 1
Find the Area of a Composite Figure Area of Rectangle A = lw Area of a rectangle A = 15● 10 Replace l with 15 and w with 10. A = 150 Multiply. Area of Triangle Example 1
Find the Area of a Composite Figure Answer: The area is 150 + 10 or 160 square centimeters. Example 1
A B C D Find the area of the figure. A. 82 yd2 B. 108 yd2 C. 119 yd2 D. 172 yd2 Example 1
WINDOWS The diagram below shows the dimensions of a window that is 3.4 feet by 7.2 feet. Find the area of the window. Round to the nearest tenth. The figure can be separated into a semicircle and a rectangle. Example 2
Area of Semicircle Example 2
Area of Rectangle A = lwArea of a rectangle A = 5.5● 3.4 Replace l with 7.2 – 1.7 or 5.5 and w with 3.4. A = 18.7 Multiply. Answer: The area is 18.7 + 4.5 or about 23.2 square feet. BrainPOP:Area of Polygons Example 2
A B C D DRIVEWAY The diagram shows the dimensions of a new driveway. Find the area of the driveway. Round to the nearest tenth. A. 162.4 ft2 B. 180.3 ft2 C. 220.8 ft2 D. 252.6 ft2 Example 2
End of the Lesson End of the Lesson
Five-Minute Check (over Lesson 11–5) Image Bank Math Tools Area of Trapezoids Drawing 3-D Figures Area of Polygons Resources
A B C D (over Lesson 11-5) Solve the problem by solving a simpler problem.Mr. Cole decided to build a deck around his swimming pool. His pool is 25 feet by 10 feet and he wants the deck to be 2.5 feet wide. What will the area of the deck be? A. 200 ft2 B. 250 ft2 C. 450 ft2 D. 300 ft2 Five Minute Check 1
A B C D (over Lesson 11-5) Solve the problem by solving a simpler problem. Over the weekend, Darrell spent $68. Of that, about 71% was spent on a game. About how much money was not spent on a game? A. $48.28 B. $19.72 C. $20.40 D. $47.60 Five Minute Check 2
A B C D (over Lesson 11-5) Solve the problem by solving a simpler problem. Becky can make 6 bracelets in 3 days. How many bracelets can she and two friends make in 8 days working at the same rate? A. 72 bracelets B. 96 bracelets C. 48 bracelets D. 144 bracelets Five Minute Check 3
A B C D (over Lesson 11-5) The graph shows the results of the 2006 Winter Olympics. The U.S. received a total of 25 medals. How many were gold? A. 7 B. 8 C. 9 D. 10 Five Minute Check 4