Assuming the conduit in the figure is a trapezoidal rough asphalt open channel with bottom width of 10' and side slopes of 3.5 horizontal to 2" vertical, and that the flow carried must be the same a) Determine the critical depth of the flow. b) Determine, using the Froude number, the whether the flow in the channel is supercritical or subcritical if the depth of flow is 3. c) Determine the normal depth of flow based on Manning's equation. Elev. 110 15- Inv. 102.5 4 Elev. 127.6 623.5 -1000 2000 B Inv. 85