A well with one meter diameter penetrate vertically through a confined aquifer $30$ m thick, with transmissivity of $400$

m$2$

$/$d$.$ When the well is pumped at constant rate, the drawdown in a well $15$ m away is $1\mathrm{.}8$ m$,$ in another well $50$ m away it

is $0\mathrm{.}5$ m$.$ the initial piezometer level is $40$ m above the datum. Find:

a$.$ The pumping rate in m$3$

$/$d$.$

b$.$ Head at the pumped well for steady state condition.

c$.$ Draw down in the well location.

d$.$ Influence Radius of the pumping well.