We will use the formular below:
[tex]A=\frac{\Theta}{360}\times\pi r^2[/tex]
where A is the area of the sector
r is the radius
Theta is the angle
θ=30 r= 11 π=22/7
substitute the values in the formula and evaluate
[tex]A=\frac{30}{360}\times\frac{22}{7}\times11^2[/tex]
[tex]A\approx31.7cm^2[/tex]
