Therefore the approximate arc length is 5.236 units , Option A is the correct answer.
What is Arc Length ?
Arc length is the distance between two points along a section of a curve.
arc length = r * θ
Where θ is the angle subtended at the center by the arc which is 5π /3 and r is the radius of the circle which is 1 unit.
arc length = 1 * 5 * π /3
arc length = 5 * 3.14 /3
arc length = 5.23 units
Therefore approximate arc length is 5.236 units , Option A is the correct answer.
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