## Precalculus (10th Edition)

$s=2.094$ meters $A=4.189$ square meters
$s=r\times\theta$ $s=4\times\frac{\pi}{6}$ meters Therefore $s=2.094$ meters $A=\frac{1}{2}\theta r^{2}$, where the angle, $\theta$ measured in radians $A=\frac{1}{2}(\frac{\pi}{6}) (4)^{2}$ $A=4.189$ square meters