## Functions Modeling Change: A Preparation for Calculus, 5th Edition

$16$ inches
Since $s=r\theta$ for an arc length $s$, use values $\theta = 2 \, \textrm{rad.}$ and $r=8 \, \textrm{in.}$ to get $$s=(2 \, \textrm{rad.})(8 \, \textrm{in.})=16 \, \textrm{in.}$$