A field is in the form of a rectangle of length 18 m and width 15 m. A pit, 7.5 m long, 6 m broad and 0.8 m deep, is dug in a corner of the field and the earth taken out is spread over the remaining area of the field. Find out the extent to which the level of the field has been raised.

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Solution

We have,

Length of the field (L) = 18 m

Width of the field (B) = 15 m

Length of the pit (l) = 7.5 m

Breadth of the pit (b) = 6 m

Depth of the pit (h) = 0.8 m

We have to find the level of field raised

Volume of the earth dug out

The area on which the earth has to be spread,

The rise in the level of the field

The level of the field has been raised to .

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