Question
Tue March 05, 2013 By:
 

a plot of land in the form of a rectangle has a dimensions 240m*180m.a drainlet 10m wide is dug all around it (on the outside) and the earth dug out is evenly spread over the plot increasing its surface level by 25cm.find the depth of the drainlet.

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Tue March 05, 2013
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