Question

Need help, don't know this

Answer 1

`\textit{area of a sector of a circle}\\\\ A=\cfrac{\theta r^2}{2} ~~ \begin{cases} r=radius\\ \theta =\stackrel{radians}{angle}\\[-0.5em] \hrulefill\\ r=\stackrel{KL}{2}\\ \theta =\stackrel{\widehat{LM}}{(14\pi )/(9)} \end{cases}\implies A=\cfrac{ ~~ \left( (14\pi )/(9) \right)(2)^2 ~~ }{2}\implies A=\cfrac{28\pi }{9}`