A well with inside diameter 30cm is digged 8.4m deep, earth taken out of it is spread around it to width of 7.5m to formed an embankment
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Step-by-step explanation: volume of the earth dug out =πr^2h=22/7*15*15*840=59400
Area of embankment i.e shaded region=1(R^2-r^2)
I(840*840-750*750)π(705600-562500)
Height of the embankment
Volume of the earth dug out/area of embankment
7*59400/22*143100
27504590000
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