water is $\backslash (1/2\backslash )$ foot? at time $\backslash ($ t $\backslash )$ is the product of the cross$-$sectional area with water and the length of the trough. $)$ a$)$ What is the height $\backslash ($ h $\backslash )$ of an equilateral triangle of side length $\backslash ($ s $\backslash )?$ h $=\backslash (\backslash$mathrm$\{$ft$\}/\backslash$mathrm$\{$sec$\}\backslash )$ b$)$ The water level is rising at a rate of symbolic formatting help