Question: Solid sphere

Question:Solid sphere

n00b 8 Maple
Does anyone know how to plot a solid sphere and not just one with a fixed radius? Lets say I wanna plot { (r,theta,phi) | 1 ≤ r ≤ 3 , 0 ≤ theta ≤ Pi , 0 ≤ phi ≤ Pi } ... would that be posible?
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