Drawdown at a 0.20-m-diameter, fully penetrating well, which has been pumping at the rate of 1000 m^3/day for a long enough time that steady-state conditions have been reached, is determined to be 0.70 m. The aquifer is unconfined and 10.0m thick. An observation well 10 m away has been drawn down by 0.20 m. Determine the hydraulic conductivity of the aquifer?