A rectangular fish tank in a HDB flat has a base measuring 25 cm by 20 cm. The water in the tank is 12 cm deep. What is the volume of water in the tank, in cubic centimetres?
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Worked Solution
Step 1: Recognise that the water in a rectangular tank forms a cuboid shape with the same base as the tank and height equal to the water level.
Step 2: Apply the cuboid volume formula: V = length × breadth × water height.
Step 3: Substitute: V = 25 × 20 × 12.
Step 4: Compute: 25 × 20 = 500, then 500 × 12 = 6000 cm³.
Check (reverse): 6000 ÷ 12 = 500 ✓ and 500 ÷ 20 = 25 ✓.
Final answer: 6000 cm³.
Answer: 6000 cm³
Correct answer: 6000 cm³
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