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Volume of a sphere

If volume of ...

Question

If volume of the hemispherical pond $= 523.908 m^{3}$ , maximum depth (radius) $= r m$
Volume of a hemisphere $= \frac{2}{3} π r^{3}$

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Solution

$\frac{2}{3} π r^{3} = 523.908$
$r^{3} = \frac{523 - 908 \times 3}{2 π} = 250.147$
r= 6.3m Hence this is the answer.

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