Area of sector
[tex] = \frac{30}{360} \times \pi \times {(radius)}^{2} [/tex]
[tex] = \frac{30}{360} \times \ \frac{22}{7} \times {(12)}^{2} [/tex]
[tex] = \frac{30}{360} \times \ \frac{22}{7} \times 12 \times 12[/tex]
so the area = 37.71 square metre
