Question 389161
{{{V=(4/3)pi*r^3}}} Start with the volume of a sphere formula.



{{{V=(4/3)pi*(3)^3}}} Plug in {{{r=3}}}.



{{{V=(4/3)(3.14)*(3)^3}}} Replace {{{pi}}} with {{{3.14}}} (note: Use more digits of {{{pi}}} to get better accuracy).



{{{V=(4/3)(3.14)*(27)}}} Cube {{{3}}} to get {{{27}}}.



{{{V=(4/3)(84.78)}}} Multiply {{{3.14}}} and {{{27}}} to get {{{84.78}}} 



{{{V=113.04}}} Multiply {{{4/3}}} and {{{84.78}}} to get {{{113.04}}} 



So the volume is approximately 113.04 cubic inches.