A 1-m diameter well penetrates vertically through a confined aquifer 27 m thick. When the well is pumped at 115 m3/hr, the drawdown in a well 20 m away is 2 m; in another well 50 m away, it is 0.75 m. What is the approximate head in the pumped well for steady-state conditions and what is the approximate drawdown in the well? Also compute the transmissivity of the aquifer and the radius of influence of the pumping well. Take the initial piezometric level as 40 m above the datum.\