Mathematics
NULL
Medium
Question
A rectangular tank measuring 5 m × 4.5 m × 2.1 m is dug in the centre of a field measuring 13.5 m × 2.5 m. The earth dug out is spread evenly over the remaining portion of the field. By how much is the level raised?
A
4m
B
4.1cm
C
4.2cm
✓ Official correct answer
D
4.3m
Community credibility
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A
4m
No member explanations yet for this option.
B
4.1cm
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C
4.2cm
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D
4.3m
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Explanation
Volume = 47.25 m³; remaining area = 13.5×2.5 − 5×4.5 = 11.25 m². Rise = 47.25/11.25 = 4.2 m, not 4.2 cm.