AC = DE = 14cm (given)
⇒ AB = BC = 7 cm (given)
Area of the shaded region = Area of rectangle ACDE + Area of semicircle DEF – 2 × Area of quadrant
∴ Area of rectangle = Length × Breadth
Area of semicircle = 1/2π(r^{2})
2 × Area of quadrant = π/4(r^{2})
∴ Area of shaded region = 14 × 7 + π/2(7)^{2} – 2 × π/4 (7)^{2}
= 98 + 49π/2 - 49π/2
= 98 cm^{2}