math

area of a sector of a circle of radius 36 cm is 54 pie cm square . find the length of the corresponding arc of the sector

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asked by shaikha
  1. i need the answer

    posted by shaikha
  2. can you not look up the formulas?

    a = 1/2 r^2 θ, so
    1/2 (36^2) θ = 54 pi (not pie!)
    θ = 108π/1296 = 0.2618

    now for the arc length,

    s = rθ = 36 * 0.2618 = 9.42

    posted by Steve

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