Answer
The Hoberman Sphere's volume $=14,130$ $in^{3}$
Work Step by Step
$r=\frac{d}{2}$
$r=\frac{30}{2}$
$r=15$
$\frac{4}{3}\pi r^{3}$
$\frac{4}{3}\times3.14\times15^{3}$
$$=14,130in^{3}$$
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