A pond has a surface area of 35 ac. If the mean daily air temperature is 66°F, the mean daily dew-point temperature is 55°F, the solar radiation is 480 langleys, and the daily wind movement is 115 mi,...

A pond has a surface area of 35 ac. If the mean daily air temperature is 66°F, the mean daily dew-point temperature is 55°F, the solar radiation is 480 langleys, and the daily wind movement is 115 mi, what is the daily lake evaporation in acre-feet?