Civil Service Exam Reviewer · Measurement and Geometry · hard
A solid metal cube with 15-cm edges is dropped into a rectangular aquarium 48 cm long and 32 cm wide, fully submerging it. By how much does the water level rise?
- 42.19 cm
- 0.146 cm
- 4.39 cm
- 2.2 cm
Answer
D. 2.2 cm
Solution
Displaced volume = 15³ = 3375 cm³. Rise = 3375 ÷ (48 × 32) = 2.2 cm.
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