2. CHAPTER 9 Geometry and Measurement Slide 2Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc. 9.1Systems of Linear Measurement 9.2Converting Units of Area 9.3More with Perimeter and Area 9.4Volume and Capacity 9.5Angles and Triangles 9.6Square Roots and the Pythagorean Theorem 9.7Weight, Mass, and Temperature 9.8Medical Applications

3. OBJECTIVES 9.2 Converting Units of Area Slide 3Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc. aConvert from one American unit of area to another. bConvert from one metric unit of area to another.

4. 9.2 Converting Units of Area a Convert from one American unit of area to another. Slide 4Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc. It is often necessary to convert units of area.

5. EXAMPLE 9.2 Converting Units of Area a Convert from one American unit of area to another. 2 Slide 5Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc.

6. EXAMPLE 9.2 Converting Units of Area a Convert from one American unit of area to another. 2 Slide 6Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc.

7. 9.2 Converting Units of Area AMERICAN UNITS OF AREA Slide 7Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc.

8. EXAMPLE 9.2 Converting Units of Area a Convert from one American unit of area to another. 3 Slide 8Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc.

9. 9.2 Converting Units of Area a Convert from one American unit of area to another. Slide 9Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc. When converting from larger units to smaller units, we can substitute directly from the table.

10. EXAMPLE 9.2 Converting Units of Area a Convert from one American unit of area to another. 1 Slide 10Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc.

11. EXAMPLE 9.2 Converting Units of Area b Convert from one metric unit of area to another. 5 Slide 11Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc. Since 1 cm = 10 mm, a square centimeter will have sides of length 10 mm.

12. EXAMPLE 9.2 Converting Units of Area b Convert from one metric unit of area to another. 5 Slide 12Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc.

13. EXAMPLE 9.2 Converting Units of Area b Convert from one metric unit of area to another. 7 Slide 13Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc.

14. 9.2 Converting Units of Area b Convert from one metric unit of area to another. Slide 14Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc.

15. 9.2 Converting Units of Area b Convert from one metric unit of area to another. Slide 15Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc. In general, a metric area conversion requires moving the decimal point twice as many places as the corresponding length conversion. We can use a table as before and multiply the number of places we move by 2 to determine the number of places to move the decimal point.

16. EXAMPLE 9.2 Converting Units of Area b Convert from one metric unit of area to another. 9 Slide 16Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc.

17. EXAMPLE 9.2 Converting Units of Area b Convert from one metric unit of area to another. 9 Slide 17Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc. Think: To go from mm to m in the table is a move of 3 places to the left.