V = Q/A
1 L = 10-3 m3
Q = 74 L/s = 74 x 10-3 m3/s
V = Q/A = [0.074 m3/s x 4 ] / (3.14 x 8.5 x 8.5 x 10-4)
V = 13.05 m/s Answer
my answer wouldn't have remained same as velocity and flow rate both are inversely proportional to the fluids density.
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