Question 656582
Thanks to Archimedes (a Greek mathematician) who derived the formula for the volume 
of a {{{sphere}}} to be {{{V=(4/3)pi*r^3)}}}  where {{{pi=3.14}}}

if {{{r=3900 mil}}}, then

{{{V=(4/3)pi*(3900 mil)^3)}}}

{{{V=(4/3)3.14*(3900 mil)^3)}}}

{{{V=(4/3)3.14*(59319000000mil^3)}}}

{{{V=(4/3)(186261660000mil^3)}}}

{{{V=(1.3333333333333333333333333333333)(186261660000mil^3)}}}

{{{V=248348880000mil^3)}}}