Digging

A pit is dug in the shape of a cuboid with dimensions 10mX8mX3m. The earth taken out is spread evenly on a rectangular plot of land with dimensions 40m X 30m. What is the increase in the level of the plot ?

Correct result:

x =  20 cm

Solution:

V=10 8 3=240 S=40 30=1200 x=V/S 100=240/1200 100=20 cm



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