code: def area_orifice(Height, RatioVCOrifice, FlowRate):
      
      #Checking input validity
      ut.check_range([Height, ">0", "Height"], [FlowRate, ">0", "Flow rate"],
                     [RatioVCOrifice, "0-1, >0", "VC orifice ratio"])
      return FlowRate / (RatioVCOrifice * np.sqrt(2 * gravity.magnitude * Height))
docs: Return the area of the orifice.