We just did one like this; let's do this a different way.
[tex]V=\frac 1 3 \pi r^2 h[/tex]
[tex]2 \pi r = 9.8 \textrm{ in}}[/tex]
[tex]r = 9.8 / (2 \pi) \approx 1.55972[/tex]
[tex]V=\frac 1 3 \pi r^2 h = (1/3) \pi (1.55972)^2(6.7) = 17.01[/tex]
Answer: 17.1 cubic inches
