# Chapter 4 - Section 4.1 - Angles and Radian Measure - Exercise Set - Page 533: 92

$s=\frac{80\pi}{3}=83.78$ cm

#### Work Step by Step

We know that $s=r\theta$. We plug in the known values to obtain: $s=80\times \frac{\pi}{3}$ $s=\frac{80\pi}{3}=83.78$ cm.

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