Heavy Equipment Operator Certification Exam Prep · Question
A trench needs to be backfilled with 300 loose cubic metres (LCM) of material. If the material compacts to 90% of its loose volume, how many compacted cubic metres (CCM) will the trench contain?
To calculate the compacted volume, multiply the loose volume by the compaction percentage. So, 300 LCM × 0.90 = 270 CCM. This represents the final volume after
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Question: A trench needs to be backfilled with 300 loose cubic metres (LCM) of material. If the material compacts to 90% of its loose volume, how many compacted cubic metres (CCM) will the trench contain?
Answer options: ✅ 270 CCM
- 300 CCM
- 330 CCM
- 315 CCM
Correct answer: 270 CCM
Explanation: To calculate the compacted volume, multiply the loose volume by the compaction percentage. So, 300 LCM × 0.90 = 270 CCM. This represents the final volume after compaction.
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