# 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 ?

Result

x =  20 cm

#### Solution:

$V=10 \cdot \ 8 \cdot \ 3=240 \ \\ S=40 \cdot \ 30=1200 \ \\ x=V/S \cdot \ 100=240/1200 \cdot \ 100=20 \ \text{cm}$

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