Geometry and TrigonometryMediumVolume of water in a half-full trough
Geometry and Trigonometry practice question
A trough has the shape of a rectangular box 40 cm long, 25 cm wide, and 20 cm deep. It is filled with water to half its depth. How many cubic centimetres of water does it hold?
Answer: 10000
Water depth is 10 cm: 40 × 25 × 10 = 10,000.
Common wrong answers
- If you answered 1000
- 1,000 is the area of the base (40 × 25), not a volume.
- If you answered 5000
- 5,000 halves the volume twice.
- If you answered 20000
- 20,000 is the full trough's volume.
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