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Chapter Area, Pythagorean Theorem, and Volume 14 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

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Presentation on theme: "Chapter Area, Pythagorean Theorem, and Volume 14 Copyright © 2013, 2010, and 2007, Pearson Education, Inc."— Presentation transcript:

1 Chapter Area, Pythagorean Theorem, and Volume 14 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

2 14-5Volume, Mass, and Temperature  Volume of Right Rectangular Prisms  Converting Metric Measures of Volume  Converting English Measures of Volume  Volumes of Prisms and Cylinders  Volumes of Pyramids and Cones  Volume of a Sphere  Mass  Relationships Among Metric Units of Volume, Capacity, and Mass  Temperature Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

3 Volume and Surface Area What is the volume of each figure? What is the surface area of each figure? 9 cubic units 36 square units34 square units Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

4 Volume of Right Rectangular Prisms Right rectangular prism Volume = wh Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

5 Converting Metric Measures of Volume 1 dm 3 = 1000 cm 3 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

6 1 m 3 = 1,000,000 cm 3 1 dm 3 = 0.001 m 3 Converting Metric Measures of Volume Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

7 Convert each of the following: a.5 m 3 = ______________ cm 3 b.12,300 mm 3 = ______________cm 3 Example 14-18 5,000,000 12.3 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

8 1 liter = 1 dm 3 = 1000 cm 3 Converting Metric Measures of Volume Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

9 UnitSymbolRelation to Liter kiloliterkL1000 L hectoliterhL100 L dekaliterdaL10 L literL1 L deciliterdL0.1 L centilitercL0.01 L millilitermL0.001 L Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

10 Convert each of the following: a.27 L = _________ mL b.362 mL = _________ L c.3 mL = _________ cm 3 d.3 m 3 = _________ L Example 14-19 27,000 0.362 3 3000 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

11 Converting English Measures of Volume Basic Units of Volume: cubic inch (in. 3 ) cubic foot (ft 3 ) cubic yard (yd 3 ) Volume equivalents: 1 gal = 231 in. 3 1 qt = gal Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

12 Convert each of the following: a.45 yd 3 = _________ ft 3 b.4320 in. 3 = _________ yd 3 Example 14-20 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

13 c.10 gal = _________ ft 3 d.3 ft 3 = _________ yd 3 Example 14-20 (continued) Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

14 Volumes of Prisms and Cylinders Cavalieri’s Principle Two solids each with a base in the same plane have equal volumes if every plane parallel to the bases intersects the solids in cross sections of equal area. Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

15 Find the volume of each figure. 216 cm 3 450 cm 3 250π cm 3 Example 14-21 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

16 Volumes of Pyramids and Cones Right pyramid Volume = where B is the area of the base. Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

17 Volumes of Pyramids and Cones Right circular cone Volume = Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

18 Find the volume of each of each figure. Example 14-22 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

19 Find the volume of the pyramid represented by the net shown. Each triangle is equilateral. Example 14-23 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

20 Volume of a Sphere Sphere Volume = Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

21 Example 14-24 Find the volume of a sphere whose radius is 6 cm. Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

22 The ratio of any linear measurement of two similar figures, for example, length, width, height, perimeter, diagonal, diameter, slant height, have the same scale factor k. For similar triangles with scale factor k, the ratio of their areas is k 2. For similar polygons with scale factor k, the ratio of their areas is k 2. Comparing Measurements of Similar Figures Theorems Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

23 Is it true that the viewing area of a 35-inch television screen is about twice the viewing area of a 25-inch television screen? Recall that television screens are measured diagonally. Areas of the ratios are: 35 2 :25 2 or 1225:625 or 1.96:1 Therefore the viewing area of a 35-inch screen is almost twice that of a 25-inch screen. Example 14-25 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

24 If the scale factor of two similar figures is k, then the scale factor of the areas or surface areas is k 2, and the ratio of volumes is k 3. Comparing Measurements of Similar Figures Theorems Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

25 How does the surface area of a sphere 10 in. in diameter compare with the surface area of a sphere 5 in. in diameter? Any two spheres are similar. The ratios of the diameters is 10:5 or 2. Ratio of surface areas is 2 2 or 4. The 10-in sphere has 4 times the surface area of the 5-inch sphere. Example 14-26a Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

26 How does the volume of a sphere 10 in. in diameter compare with the volume of a sphere 5 in. in diameter? The ratios of the volumes is 2 3 or 8. The volume of a 10-in sphere has 8 times the volume of the 5-inch sphere. Example 14-26b Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

27 Mass: a quantity of matter Weight: a force exerted by gravitational pull Gram: fundamental unit of mass in the metric system Mass Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

28 UnitSymbolRelation to Gram metric tonT1,000,000 g kilogramkg1000 g hectogramhg100 g dekagramdag10 g gramg1 g decigramdg0.1 g centigramcg0.01 g milligrammg0.001 g Copyright © 2013, 2010, and 2007, Pearson Education, Inc. Mass

29 Convert each of the following: a.34 g = _________ kg b.6836 kg = _________ t 0.034 6.836 Example 14-28 Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

30 1 cm 3 (1 mL) of water = 1 g 1 dm 3 (1 L) of water = 1 kg Relationships Among Metric Units of Volume, Capacity, and Mass Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

31 a.Approximately how many liters of water can it hold? b. What is its mass in kilograms when it is full of water? A waterbed measures 180 cm x 210 cm x 20 cm. Example 14-29 Because 1 L of water has a mass of 1 kg, 756 L of water has a mass of 756 kg, which is 0.756 t. Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

32 degree Kelvin: base unit of temperature in the metric system; used only for scientific measurements. The freezing point of water is 273°K. degree Celsius: used for customary temperature measurements in the metric system. Its scale has 100 equal divisions. The freezing point of water is 0°C, and its boiling point is 100°C. Temperature Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

33 degree Fahrenheit: used for customary temperature measurements in the English system. Its scale has 180 equal divisions. The freezing point of water is 32°F, and its boiling point is 212°F. Temperature Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

34 Comparing Temperatures in Degrees Celsius and Degrees Fahrenheit Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

35 Converting between degrees Celsius and degrees Fahrenheit To convert temperatures, use the following formulas: Copyright © 2013, 2010, and 2007, Pearson Education, Inc.


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