The drawdown $s_w$ in an agricultural pumping tubewell is expressed by Jacob's well loss equation $s_w = B Q + C Q^2$, where the formation aquifer loss coefficient is $B = 15.0\text{ s/m}^2$ and the well loss coefficient is $C = 125.0\text{ s}^2\text{/m}^5$. When pumped at a steady discharge $Q = 0.040\text{ m}^3\text{/s}$, the total drawdown $s_w$ at the well screen in metres is ________ (round off to 1 decimal place).