Answer
a)$h=0.60m$
a)$h=8.15m$
Work Step by Step
No matter what fluid you use the relation of pressure will be:
$P_{g}=\rho_{fluid}*g*h$
Then:
$h=\frac{P_{g}}{\rho_{fluid}*g}$
a)$h=\frac{80000Pa}{(13600\frac{kg}{m^3})*(9.81\frac{m}{s^2})}=0.60m$
a)$h=\frac{80000Pa}{(1000\frac{kg}{m^3})*(9.81\frac{m}{s^2})}=8.15m$
