Answer:
[tex]a=10.88\pi[/tex]
Step-by-step explanation:
using the formula below, the central angle is 20° (bc 360-180-160=20)
radius is 14 (28/2=14)
[tex]\frac{20}{360} =\frac{a}{\pi r^2} \\ \frac{1}{18} =\frac{a}{\pi 14^2}[/tex]
[tex]\frac{1}{18} =\frac{a}{196\pi}[/tex]
[tex]a=\frac{1*196\pi}{18} \\a=1*10.88\pi\\a=10.88\pi[/tex]
