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A tank 40 m long, 30 m broad and 12 m deep is dug in a field 1000 m long and 30 m wide. By how much will the level of the field rise if the earth dug out of the tank is evenly spread over the field ?
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- 2 metre
- 1.2 metre
- 0.5 metre
- 5 metre
- 2 metre
Correct Option: C
Volume of earth taken out = 40 × 30 × 12 = 14400 cu.metre
Area of the rectangular field = 1000 × 30 = 30000 sq. metre
Area of the region of tank = 40 × 30 = 1200 sq. metre
Remaining area = 30000 – 1200 = 28800 sq. metre
| Increase in level = | = 0.5 metre | |
| 28800 |
