## Precalculus (6th Edition) Blitzer

4$\pi$ inches $\approx$ 12.57 inches
s = rθ r = 6 inches θ = $\frac{1}{3}$ revolution = $\frac{1}{3}$ * 2$\pi$ = $\frac{2\pi}{3}$ radians s = 6 * $\frac{2\pi}{3}$ = 4$\pi$ inches $\approx$ 12.57 inches