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Use the solve a simpler problem strategy to solve Exercises 1–3. 1. Mr. Cole decided to build a deck around his swimming pool. His pool is 25 feet by 10.

Published byMaryann Gertrude Hodge Modified over 9 years ago

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Presentation on theme: "Use the solve a simpler problem strategy to solve Exercises 1–3. 1. Mr. Cole decided to build a deck around his swimming pool. His pool is 25 feet by 10."— Presentation transcript:

1 Use the solve a simpler problem strategy to solve Exercises 1–3. 1. Mr. Cole decided to build a deck around his swimming pool. His pool is 25 feet by 10 feet. He wants the deck to be 2.5 feet wide. What will the area of the deck be? 2. Over the weekend, Darrell spent $68. Of that, about 71% was spent on a game. How much money was NOT spent on a game? 3. 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? 4. The graph shows the results of the 2008 Summer Olympics. The U.S. received a total of 110 medals. About how many were gold? Course 2, Lesson 8-5

2 ANSWERS 1. 200 ft² 2. $19.72 3. 48 4. 36

3 Geometry Course 2, Lesson 8-5 HOW do measurements help you describe real-world objects?

4 Course 2, Lesson 8-5 Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. Geometry 7.G.6 Solve real-world and mathematical problems involving area, volume and surface area of two- and three-dimensional objects composed of triangles, quadrilaterals, polygons, cubes, and right prisms. Mathematical Practices 1Make sense of problems and persevere in solving them. 3Construct viable arguments and critique the reasoning of others. 4Model with mathematics. 6Attend to precision.

5 To find the volume of a pyramid To find the height of a pyramid Course 2, Lesson 8-5 Geometry

6 Course 2, Lesson 8-5 Geometry pyramid lateral face

7 Course 2, Lesson 8-5 Geometry WordsThe volume V of a pyramid Model is one third the area of the base B times the height of the pyramid h. SymbolsV = Bh

8 How did what you learned today help you answer the Course 2, Lesson 8-5 Geometry HOW do measurements help you describe real-world objects?

9 How did what you learned today help you answer the Course 2, Lesson 8-5 Geometry HOW do measurements help you describe real-world objects? Sample answers: To find the volume of a pyramid-shaped figure, such as a building To find the height of a pyramid-shaped figure when you know its volume

10 Write the steps that you would use to find the volume of a triangular pyramid. Course 2, Lesson 8-5 Ratios and Proportional RelationshipsFunctionsGeometry

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