Answer
$h_{blood}=1.55m$
Work Step by Step
Knowing that:
$P=\rho*g*h$
$P_{high}=(13600\frac{kg}{m^3})*(9.81\frac{m}{s^2})*(0.12)=16009.92Pa$
$h_{blood}=\frac{P_{high}}{g*\rho_{blood}}=\frac{16009.92Pa}{(9.81\frac{m}{s^2})*(1050\frac{kg}{m^3})}$
$h_{blood}=1.55m$