solve with simple steps

SECTION B 1. The dynamic behaviour of the liquid level in a certain Cylindrical tank is modelled by: A db = Fi - ch 7/3 where A is the uniform cross- sectional area (m? ) Fi is the inlet flowrate (m3/ min ) h is the liquid level ( m ) ( is a constant . Lineasize this process model around a steady state level he and obtain an approximate transfer function model relating the deviation variables y = h-hs and U = Fi - Fis where Fis is the steady state inlet flowrate Corresponding to hs. Specify the steady state gain and the time constant of the approximate tramsfer function