219k views
5 votes
What is the measure of the central angle that intercepts an Arc that has a length of 5.45 m and a radius of 2 m

1 Answer

4 votes


\bf \textit{arc's length}\\\\ s = \cfrac{\pi \theta r}{180}~~ \begin{cases} r=radius\\ \theta = \stackrel{central}{angle}~in\\ \qquad degrees\\[-0.5em] \hrulefill\\ r=2\\ s=5.45 \end{cases}\implies 5.45=\cfrac{\pi \theta (2)}{180}\implies 5.45=\cfrac{\theta \pi }{90} \\\\\\ 490.5=\theta \pi \implies \cfrac{490.5}{\pi }=\theta \implies \stackrel{degrees}{156.13\approx \theta }~\hfill \stackrel{radians}{2.72\approx \theta }

User Coz
by
7.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories