Civil Service Exam Reviewer · Measurement and Geometry · hard
An open-top box (no lid) is 23 cm long, 18 cm wide and 6 cm high. What is the area of material used?
- 1320 cm²
- 906 cm²
- 2484 cm²
- 492 cm²
Answer
B. 906 cm²
Solution
Bottom 414 + sides 2(23 + 18)(6) = 492 → 906 cm².
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