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r in (-oo:+oo)
44579.626 = 3.14*(4/3)*r^2 // - 3.14*(4/3)*r^2
44579.626-(3.14*(4/3)*r^2) = 0
44579.626-4.18666667*r^2 = 0
-4.18666667*r^2 = -44579.626 // : -4.18666667
r^2 = 10647.99983229
r^2 = 10647.99983229 // ^ 1/2
abs(r) = 10647.99983229^(1/2)
r = 10647.99983229^(1/2) or r = -10647.99983229^(1/2)
r in { 10647.99983229^(1/2), -10647.99983229^(1/2) }
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