the PoT analysis $($with waves over $2$ meters$)$ has identified $1750$ storms within an interval of $20$ years. Using the Weibull distribution and the POT analysis, an statistician has determine the values of $A=1\mathrm{.}28,B=1\mathrm{.}16$ and $=1\mathrm{.}22.$ You need to design a breakwater to protect a nuclear plant which has to resist a wave exceeded with a return period of $30$ years. What is the height of the wave you need to consider?