The drawdown at the well face of a $30 \mathrm{~cm}$ diameter fully penetrating well in a confined aquifer is $3 \mathrm{~m}$. The radius of influence of this well is $3 \mathrm{~km}$. For the same discharge and aquifer condition, the drawdown at $300 \mathrm{~m}$ away from the centre of the well is_____________ $\quad \mathrm{m}$.
The drawdown at the well face of a $30 \mathrm{~cm}$ diameter fully penetrating well in a confined aquifer is $3 \mathrm{~m}$. The radius of influence of this well is $3 \mathrm{~km}$. For the same discharge and aquifer condition, the drawdown at $300 \mathrm{~m}$ away from the centre of the well is_____________ $\quad \mathrm{m}$.