A rectangular tank with internal dimensions 30 cm by 20 cm by 25 cm is initially empty. Water flows into the tank at 1 200 cm³ per minute. After 10 minutes, find the depth of water in the tank.
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Worked Solution
Step 1: Total water volume after 10 min = 1 200 × 10 = 12 000 cm³.
Step 2: Base area of tank = 30 × 20 = 600 cm².
Step 3: Depth = volume ÷ base area = 12 000 ÷ 600 = 20 cm.
Answer: 20 cm
Correct answer: 20 cm
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