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Skills Practice Workbook - Glencoe

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12–4<br />

NAME DATE PERIOD<br />

<strong>Skills</strong> <strong>Practice</strong><br />

Surface Areas of Pyramids and Cones<br />

Find the lateral area and the surface area of each regular pyramid or cone. Round to<br />

the nearest hundredth, if necessary.<br />

1. 2. 3.<br />

42 ft 2 ; 51 ft 2 898.50 cm 2 ; 575 m 2 ; 675 m 2<br />

1278.63 cm 2<br />

4. 5. 6.<br />

43.98 ft 2 ; 56.55 ft 2 3840 cm 2 ; 4864 cm 2 30,536.28 in 2 ;<br />

36,697.16 in 2<br />

7. 8. 9.<br />

28 ft<br />

672 ft 2 ; 840 ft 2 276.46 in 2 ; 477.52 in 2 18,750 cm 2 ;<br />

24,375 cm 2<br />

10. 11. 12.<br />

4 mi<br />

2 ft<br />

7 ft<br />

7 ft<br />

3 ft<br />

7 ft 8 ft<br />

10 mi<br />

11 cm<br />

9 cm<br />

32 cm<br />

8 in.<br />

62.83 mi 2 ; 75.40 mi 2 324 cm 2 ; 405 cm 2 31.42 km 2 ;<br />

43.98 km 2<br />

© <strong>Glencoe</strong>/McGraw-Hill 70 Geometry: Concepts and Applications<br />

26 cm<br />

60 cm<br />

11 in.<br />

18 cm<br />

54 in.<br />

125 cm<br />

4 km<br />

23 m<br />

4 m 10 m<br />

180 in.<br />

75 cm<br />

5 km

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