Use a model for body surface area, BSA, such that
BSA = sqrt (wh/3600) , where w = weight in kg and h = height in cm.
Find the weight of a 179-cm male to the nearest kg whose
BSA = 2.3.
-------- Substituting 2.3 for BSA, and 179 for h
----- Cross-multiplying
---- Squaring both sides