Answer
Grazing Area = 339.43 square units
Explanation
The area of the grazing are is the area of the sector outside the shaded square.
The area of a sector is given as
[tex]\text{Area = }\frac{\theta}{360\degree}\times\pi r^2[/tex]where
θ = Angle subtended at the center of the circle by the sector = 360° - 90° = 270°
π = pi = 3.142
r = radius of the circle = 12 units
[tex]\begin{gathered} \text{Area = }\frac{\theta}{360\degree}\times\pi r^2 \\ \text{Area = }\frac{270\degree}{360\degree}\times\pi\times12^2 \\ \text{Area = 339.43 square units} \end{gathered}[/tex]Hope this Helps!!!