Question 409492
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Hi
Sphere:  
 {{{V[r] = 4/3*pi*r^3}}}        |originally
  {{{V[2r] = 4/3*pi*(2r)^3}}}   |  8 times the original volume
  {{{V[r/2] = 4/3*pi*(r/2)^3}}} |  1/8 as much as the original volume