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Re: volume of sphere
Radius of the sphere
$V = \dfrac{\pi h^2}{3}(3R - h)$
$100 = \dfrac{\pi (8^2)}{3}(3R - 8)$
$R = 3.164 ~ \text{m}$
Volume of the sphere
$V = \frac{4}{3}\pi R^3 = \frac{4}{3}\pi (3.164^3)$
$V = 132.68 ~ \text{m}^3$ answer