The area of any sector of a circle is
[tex]A=\frac{1}{2}r^2\vartheta[/tex]Where r is the radius of the circle and theta is the central angle of the sector in the radian measure
[tex]\begin{gathered} r=3 \\ \vartheta=\frac{\pi}{2} \end{gathered}[/tex]Substitute them in the rule above
[tex]\begin{gathered} A=\frac{1}{2}(3)^2(\frac{\pi}{2}) \\ A=\frac{9}{4}\pi \end{gathered}[/tex]The area of the top wedge is 9/4 pi square inches
You can use pi = 3.14
A = 7.065 square inches