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LESSON

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Problem Solving

2. Eight bocce balls are in a box 18 inches long, 9 inches wide, and 4.5 inches deep. If each ball has a diameter of 4.5 inches, what is the volume of the space around the balls? Round to the nearest tenth.

4.5 in. 9 in. 18 in.

10-8 Spheres

1. A globe has a volume of 288 in3. What is the surface area of the globe? Give your answer in terms of .

Use the table for Exercises 3 and 4. Ganymede, one of Jupiter's moons, is the largest moon in the solar system. 3. Approximately how many times as great as the volume of Earth's moon is the volume of Ganymede?

Moon Earth's moon Ganymede

Diameter 2160 mi 3280 mi

4. Approximately how many times as great is the surface area of Ganymede than the surface area of Earth's moon?

Choose the best answer. 5. What is the volume of a sphere with a 2 great circle that has an area of 225 cm ? A 300 cm3 C 2500 cm3 B 900 cm

3

D 4500 cm

3

6. A hemisphere has a surface area of 1 972 cm2. If the radius is multiplied by __, 3 what will be the surface area of the new hemisphere? 2 F 36 cm2 H 162 cm G 108 cm

2

J 324 cm

2

7. Which expression represents the volume of the composite figure formed by the hemisphere and cone?

6 mm 25 mm

8. Which best represents the surface area of the composite figure?

3 in.

10 in. 6 in.

A 52 mm3 B 156 mm3

Copyright © by Holt, Rinehart and Winston. All rights reserved.

C 276 mm3 D 288 mm3

F 129 in2 G 138 in2

H 201 in2 J 210 in2 Holt Geometry

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