# Calculate the length of the arc of a circle of radius 31.0 cm which subtends an angle of π/6 at the centre.

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Calculate the length of the arc of a circle of radius 31.0 cm which subtends an angle of π/6 at the centre.

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θ = l/r ⇒ l = rθ ⇒ l = 31 x (3.14/6)cm = 16.3 cm