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A cylindrical well of height 40 meres an...

A cylindrical well of height 40 meres and radius 7 metres is dug in a field 56 metres long and 11 metres wide. The earth taken out is spread evenly on the field. What is the increase in the level of the field ?

A

`12.5 `

B

`10.66 `

C

`11.5`

D

`13.33`

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