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Find the surface area of each pyramid. Round to the nearest tenth.

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Presentation on theme: "Find the surface area of each pyramid. Round to the nearest tenth."— Presentation transcript:

1 Find the surface area of each pyramid. Round to the nearest tenth.
3. A triangular pyramid has a slant height of 13 inches. The triangular base has a perimeter of 23 inches and an area of 15 square inches. Find the surface area. 4. A square pyramid has a slant height of 6.25 yards. The base has side lengths of 4.8 yards. Find the surface area. Course 2, Lesson 8-8

2 ANSWERS 1. 32 cm² 2. 156mm² in² 4. 83 yd² Course 2, Lesson 8-8

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

4 Mathematical Practices
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 1 Make sense of problems and persevere in solving them. 3 Construct viable arguments and critique the reasoning of others. 4 Model with mathematics. Course 2, Lesson Common Core State Standards © Copyright National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.

5 To find the volume of a composite figure To find the surface area of a
Geometry To find the volume of a composite figure To find the surface area of a Course 2, Lesson 8-8

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

7 How did what you learned today help you answer the
Geometry How did what you learned today help you answer the HOW do measurements help you describe real-world objects? Sample answers: To find the amount a composite figure can hold, such as the amount of water need to fill a swimming pool To find the amount of paint needed to cover a composite figure, such as a birdhouse Course 2, Lesson 8-8

8 Geometry Functions Ratios and Proportional Relationships Explain how you used the solve a simpler problem strategy to solve problems involving volume and surface area of composite figures. Course 2, Lesson 8-8

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