Question

7
A field is 15 m long and 12 m broad. At one corner of this field a rectangular
well of dimensions 8 m x 2.5 mx 2 m is dug and the dug-out soil is spread
evenly over the the rest of the field. Find the rise in the level of the rest of the
field.
lution :
5​

Answer 1

Answer:

area of rectangle = 15 * 10 = 150 m2

area of square pit = 5*5 = 25 m2

remaining area = 150-25 = 125 m2

volume of sand dug out = 5*5*1 = 25 m3

therefore 25 m3 we have to spread on 125 m2

this implies rise in the level of field = 25/125 = 1/5 = 0.2 m