Question: Using the differential length dl, find the length of each of the following curves: (a) = 3, /4 < < /2, z = constant (b)

Using the differential length dl, find the length of each of the following curves:
(a) ρ = 3, π/4 < Φ < π/2, z = constant
(b) r = 1, θ = 30°, 0 < Φ < 60°
(c) r = 4, 30° < θ < 90°, Φ = constant

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