Answer:
Explanation:
area of the sector = 144 π
the whole circle is πr²= 36²π = 1,296π
the whole circle has an angle of 360°
the area of the sector has the angle ∠FAN
∠FAN/360 = 144π/1,296π
∠FAN = 360 * 144π/ 1,296π
∠FAN = 40°
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