Answer
$10.69\text{ m}$
Work Step by Step
$P=700\cdot 133.322=93,325.4\text{ Pa}$
We determine the specific gravity:
$\gamma_{oil}=SG\cdot \gamma_{water}$
$=0.89\cdot 9810$
$=8730.9\text{ N/m}^3$
Use the hydrostatic formula:
$P=\gamma\cdot h$
$h=\frac{P}{\gamma}=\frac{93,325.4}{8730.9} \approx 10.69\text{ m}$
