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r1=1.5m
h1=14m
r2=4m
H2=?
Volume of Earth dug = volume of well
?(r2)?h2 = ?(r1)?h1
4 X 4 X h2 = 1.5 X 1.5 X 14
h2 = (1.5*1.5*14)/4*4
h2=1.96m
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