9.1 Review Worksheet (continued)
Find the area of each regular polygon. Round to the nearest tenth, if necessary. 17. 18.
2 ft
12 cm
19. a regular nonagon with a perimeter of 144 in.
20. a regular pentagon with an apothem of 2 ft.
9.1.3 Composite Figures Find the shaded area. Round to the nearest tenth, if necessary. 21. 22. 7 mm
20 yd
3 mm
6 mm
40 yd
12 mm
24.
23.
24 in.
12 in.
2 m
18 in.
9 in.
51 in.
2 m
126
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