In an average year, a small watershed $($area $=3$ square kilometers$)$ receives $950$ mm of precipitation, which produces annual runoff of $1\mathrm{.}1$ million cubic meters. a$.$ what is the volume of water cubic meters and cubic feet that is lost each year b$.$ what is the equivalent depth $($meters and mm$)$ of water lost to ET each year c what is the runoff ratio and what is its significance? Thanks!!!!!