$3\mathrm{.}35.$ The elevation$-$versus$-$surface$-$area data for a reservoir are as follows:Elevation, mArea, haOutllow, m$\text{'}/$satoe $00$s snw siedy ooct $1$ge sidl to daungonbyd wotloi stt oit.Using these data, determine the time required to lower the water surface fromelevation $18\mathrm{.}0$ to elevation $17\mathrm{.}0.$ During the entire period there is a steady inflow of$2\mathrm{.}7$ m$\text{'}/$s$.$ Neglect cvaporation and seepage$\mathrm{.}18\mathrm{.}02104\mathrm{.}5417\mathrm{.}51804\mathrm{.}3817\mathrm{.}01604\mathrm{.}24$