These are good points re body shape (angles) changing, not just scale
(frequency). Only when shape is rigidly adhered to may we assume a direct
F, F^2, F^3 relationship between edge, area, and volume -- why classroom
chatter around geometric shapes, e.g. tetrahedra and cubes, is apropos.
The BSA formulae I've seen do not factor in age, are empirically derived
and/or matched to data with tolerable error and therefore routinely employed
across a large range of ages for administering heparin for example, an
anti-coagulant, pre-surgery. But possibly pediatrics has a special formula
for the very youngest (and pre birth, we approach a more spherical beginning
-- back to simple geometry again).
Kirby
Curriculum writer
4D Solutions
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