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(\pi)/(180)\Rightarrow\alpha=(4)/(5)\pi`

*Second: We will determine the arc length:

`s=(10)((4)/(5)\pi)\Rightarrow s=8\pi`

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