Question: It is suggested that a channel which reduces erosion has a parabolic shape, as in Fig. P10.46. Formulas for area and perimeter of the parabolic

It is suggested that a channel which reduces erosion has a parabolic shape, as in Fig. P10.46. Formulas for area and perimeter of the parabolic cross-section are as follows [Ref. 7 of Chap. 10]:

where =4/20 +_in(+v1+ , b/2 b/2

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