What is the critical depth for a flow $0\mathrm{.}3\frac{m^3}{s}$ flowing through the cross section$6\mathrm{.}2.$ Compute the critical depth for flow at $0\mathrm{.}4\frac{m^3}{s}$ through the cross section shown below in Figure $7.$

$(6)$

Fiqure $7$

$($Note: Drawing not to scale$)$

below?