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Answer:
16. 15cm
17. 15m
18. 9m
19. 4.5m
Explanation:
16. A=½bh A=½(3•5) A=15
17. A=0.5(2+5)3 A=15
18. A=3×3 A=9
19. A= 3×1.5 A=4.5
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