Question

Find the length of the arc shown in red. Leave your answer in term of pi

Answer 1

Given

Circle

r: Radius

r = 4ft

s = 360° - 144°

s = 216°

Procedure

`\begin{gathered} l=s\cdot r \\ l=216\cdot(\pi)/(180)\cdot4 \\ l=4.8\pi \end{gathered}`

The length would be 4.8 pi ft