How to solve this problem.

Answer:
C. 35.3 m²
Step-by-step explanation:
The area of a sector of a circle is given by;
Area = Central angle/360° × π × r²
In this case the area = [tex]\frac{50}{360}[/tex] × π × 9² = 35.3429173529
Or 35.3 m² (rounded up to one decimal value)