The answer is 179.451 or 1143π/20.
The arc is 254°. A circle is 360°. This means the arc makes up 254/360 of the circle. We will multiply this fraction by the area of the circle, which is
A = πr² = π(9)² = 81π = 254.34
81π(254/360) = 20574π/360 = 1143π/20 = 179.451