Gradient Descent

Given a function $f(x,y)=\sqrt{x^2+y^2}$, a starting point $\bold{x}_0=(2,3)$, a step size $\gamma = 0.8$, and $k=3$. What is the approximated minimum $z_{min}=f(x^*,y^*)$ where $\bold{x^*} = (x^*, y^*)$ is the minimizer found with the Gradient Descent method? Round your answer to one decimal point.