Question: A geologist studying cave formations observes that a stalactite grows in a spiral path modeled by the parametric equations $x(t) = \cos t$, $y(t) = \sin t$, $z(t) = \fract4\pi$, where $t \geq 0$. Find the arc length of the stalactite's growth from $t = 0$ to $t = 4\pi$ years. - Portal da Acústica