A confined aquifer, 30 m thick, has a piezometric surface 75 m above the top of the

Question:

A confined aquifer, 30 m thick, has a piezometric surface 75 m above the top of the confined aquifer. A 40-cm-diameter well draws water from the aquifer at the rate of 0. 1 m3 /sec. If the drawdown at the well is 30 m and the drawdown in an observation well 50 m away is 10 m, what is the trans missivity and the radius of influence?