how many cubic metres of earth must be dug to construct a 20 m deep well of diameter 7 n?if the earth taken out is spread over a rectangular plot of size 22m*14m,find the height of the plattform so formed
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Step-by-step explanation:
We first get the volume of the soil dug out by getting the volume of the hole dug.
Volume=3.142×3.5^2×20=769.79
769.79m3
The area of the field is=28×11=308m2
The soil level =769.79/308=2.499m
2.499m
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