The volume of a sphere is given by the equation [tex]V=\frac{4}{3} \pi r^{3}[/tex], where V is the volume and r is the radius.
To answer this question, simply plug the correct values into the equation:
[tex]V=\frac{4}{3} \pi 3^{3} \\V=4.1888(27)\\V=113.0976[/tex]
The volume of the air in the balloon is about 113.0976 in3.
Hope this helps!!
