For the configuration shown in the figure, oil of density 800 kg/m\(^3\) lies above water of density 1000 kg/m\(^3\). Assuming hydrostatic conditions and acceleration due to gravity \( g = 10 \, \text{m/s}^2 \), the length \( L \) (in meters, up to one decimal place) of water in the inclined tube is \(\underline{\hspace{2cm}}\).
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