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Answer 1

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Answer 2

let height of embankment = x metres
volume of earth dug out from well =
$\pi {r}^{2} h$
22/7*1.5*1.5*14
99 metres. n
volume of embankment =
$22 \div 7 \times (1.5 + 4) \times (1.5 + 4) \times x - 22 \div 7 \times (1.5) \times (1.5) \times x$
$22 \div 7 \times x \times (30.25 - 2.25)$
$22 \div 7 \times x \times 28 \: \: \: \: \: \: \: \: \: \: m$
from m and n
99 = 22/7* x * 28
therefore x = 1.125 metres

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