Situation $12-$ The triangular channel $)=(0\mathrm{.}012$ shown is to carry water at a flow rate of $10m\frac{3}{s}.$

$29.$ Find the critical depth of the channel.

A$.1\mathrm{.}178$

C$.1\mathrm{.}441$

B$.1\mathrm{.}245$

D$.1\mathrm{.}364$

$30.$ Find the critical velocity of the channel.

A$.2\mathrm{.}645$

C$.2\mathrm{.}333$

B$.2\mathrm{.}504$

D$.2\mathrm{.}403$

$31.$ Find the critical slope of the channel.

A$.0\mathrm{.}00124$

C$.0\mathrm{.}00181$

B$.0\mathrm{.}00326$

D$.0\mathrm{.}00214$