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Find the area of each circle. Round to the nearest tenth. Use 3

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Presentation on theme: "Find the area of each circle. Round to the nearest tenth. Use 3"— Presentation transcript:

1 Find the area of each circle. Round to the nearest tenth. Use 3
Find the area of each circle. Round to the nearest tenth. Use 3.14 or for . 2. 4. 5. Rick wants to make a big cookie cake. If he uses a round cookie sheet that is 12 inches in diameter, about how much cookie dough will he need to cover the pan? Course 2, Lesson 8-3

2 ANSWERS cm2 m2 in2 ft2 in² Course 2, Lesson 8-3

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

4 Geometry 7.G.4 Know the formulas for the area and circumference of a circle and use them to solve problems; give an informal derivation of the relationship between the circumference and area of a circle. 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. 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 Mathematical Practices
Geometry Mathematical Practices 1 Make sense of problems and persevere in solving them. 2 Reason abstractly and quantitatively. 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.

6 To find the area of a composite figure To find the area of a shaded
Geometry To find the area of a composite figure To find the area of a shaded region Course 2, Lesson 8-3

7 Geometry composite figure Course 2, Lesson 8-3

8 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 8-3

9 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 area of a composite figure, such as a miniature golf course hole To find the area of the shaded portion of a figure, such as the blueprint of a swimming pool area Course 2, Lesson 8-3

10 Geometry Functions Ratios and Proportional Relationships What measurements would you need to know in order to find the area of the figure at the right? What steps would you take to find its area? Course 2, Lesson 8-3

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