Angular and Linear Velocity

$\frac{19\;rad}{1sec}\qquad \frac{2\pi \;rad}{1revolution}\qquad \frac{9\;inchess}{rad} \qquad \frac{?inches}{sec}\\ \\~\\ \frac{9\;inches}{rad}\times \frac{19\;rad}{1sec}=\frac{9*19\;inches}{second}=171inches/sec$