Answer:
10. 23.7 m^2
11. 39.25 cm^2
12. 37.2 mm^2
13. 25.92 mm^2
Explanation:
10. 7.9 x 6 = 47.4 m.
47.4/2 = 23.7 m.
A = 23.7 m.
11. A = a+b/2 x h
8.5 + 7.2 = 15.7
15.7/2 = 7.85
7.85 x 5 = 39.25
A = 39.25 cm.
12. A = bh
18.6 x 4 = 37.2
A = 37.2 mm.
13. A = bh
3.6 x 2 = 7.2
1.8 x 2 = 3.6
7.2 x 3.6 = 21.6 + 4.32 = 25.92
A = 25.92 mm.
10. 23.7 m^211. 39.25 cm^2
12. 74.4 mm^213. 12.96 mm^2
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