The formula is s = rθ, where s is the arc length, r is the radius, and θ is the radian measure of the central angle.

Plug in the given values and solve for θ.

The formula is s = rθ, where s is the arc length, r is the radius, and θ is the radian measure of the central angle.

Plug in the given values and solve for θ.

William W. answered • 08/25/21

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The equation S = rθ lets you solve this question.

S = arc length (same unit as radius)

r = radius (same unit as arc length)

θ = the angle that intercepts the arc (in radians)

So if S = rθ then θ = S/r = 18.6/3 = 6.2 radians

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