If the area of circle O is 16π, what is the length of an arc on the circle formed by a central angle measuring 25 degrees?
Choose one.
A) π	B) 3π/2	C) 2π	D) 5π/9	E) 8π
Area = 16π   Radius = 4   Circumference = 2 x 4 x π = 8π   Angle forming the arc = 25 degrees. 25/360 = 5/72.   Therefore length of arc = 5/72 * 8π = 5π/9 - Answer choice 5π/9.
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If the area of circle O is 16π, what is the length of an arc on the circle formed by a central angle measuring 25 degrees?