3. Let R be the region below bounded by the parabola y = 4 - x² and the lines 3x - 2y + 3 = 0 and y = 0. (0,4) (1,3) R (b) Set up a definite integral that is equal to the arc length of the portion of the parabola y = 4 - x² which serves as a boundary of R. (-2,0) (-1,0)

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