A tank 40 m long, 30 m broad and 12 m de...

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 dugout of the tank is evenly spread over the field?

2 metre

1.2 metre

0.5 metre

5 metres

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