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Answer:
1. 3,000 cm
2. 1,728 cm
3. 197.82 cm
Step-by-step explanation:
1. V = lwh
V = 20 cm x 10 cm x 15 cm
V = 200 cm x 15 cm
V = 3,000 cm
2. V = a³
V = (12cm)³
V = 12 cm x 12 cm x 12cm
V = 144 cm x 12 cm
V = 1,728 cm
3. V = πr²h
V = 3.14 (3cm)² 7 cm
V = 3.14 x 9cm x 7 cm
V = 3.14 x 63 cm
V = 197.82