Question

Find the length of the arc in terms of pi. AB=

Answer 1

We will determine the arc length as follows:

*First: We transform the angle to radians:

$\alpha=144\cdot\frac{\pi}{180}\Rightarrow\alpha=\frac{4}{5}\pi$

*Second: We will determine the arc length:

$s=(10)(\frac{4}{5}\pi)\Rightarrow s=8\pi$

So, the arc length from A to B is 8*pi.