[tex]v = \pi {r}^{2} h[/tex]
[tex]v = (3.14) {(3)}^{2} (20)[/tex]
[tex]v = 565.2 \: {cm}^{3} [/tex]
[tex] \frac{45781.2}{565.2} = 81[/tex]
They made 81 rods.
