Answer
$h=1.12m$
Work Step by Step
First we calculate the $P_{gage}$
$P_{gage}=P_{abs}-P_{atm}=110kPa-99kPa=11kPa$
This pressure will be equal to:
$P_{gage}=\rho_{water}gh$
Solving for $h$:
$h=\frac{P_{gage}}{\rho_{water}g}=\frac{11000}{1000\frac{kg}{m^3}*9.81\frac{m}{s^2}}=1.12m$
