## Calculus: Early Transcendentals 8th Edition

Answer: $2\pi$ $\approx$ 6.28
First, we convert the 30° in radians with the equation: $x° * \frac{\pi}{180}$ then, $30° * \frac{\pi}{180}$ = $\frac{\pi}{6}$ Then, knowing the equation to find the arc of a circle ($L$) is: $L = angle\times radius$ we multiply the radians that we already found by the radius $\frac{\pi}{6}$ * radius = $\frac{\pi}{6} * 12$ = $\frac{12\pi}{6}$ This gives ${2\pi}$