Answer:
11.6 cm²
Explanation:
The area (A) of the shaded region is
A = area of sector - area of triangle
area of sector = area of circle × fraction of circle
= π × 9.28² ×
≈ 51.78 cm²
area of triangle =
× 9.28 × 9.28 × sin68.9°
= 0.5 × 9.28² × sin68.9 ≈ 40.17 cm²
Area of shaded region = 51.78 - 40.17 ≈ 11.6 cm²