Answer:
[tex] \frac{140}{360} \times {18 }^{2} = 126.\pi[/tex]
Step-by-step explanation:
the formular for area of a sector is
[tex] \frac{ \alpha }{360} \times \pi \: {r}^{2} [/tex]
therefore bcos of it's in terms of pi, all you do is use the pi
[tex]\pi[/tex]
the way it is written till the end of the equation
