Calculate Body Surface Area using Mostellar formula in Excel

Hi has anyone used the above method to calculate a body surface area in Excel using the Mostellar method ? I have looked on Google and the formula is:
Mosteller Method:[1]

BSA (m2) = (height (cm) x weight (kg)/3600)½

eg, BSA (m2) = square root of (height (cm) x weight (kg)/3600)

Using their example a height and weight of 121cm and a weight of 25 the BSA calculates at 0.92.
On my formula in Excel: =SQRT(X172*N172)/3600 I get 0.12.  
Any suggestions please/

Thanks
Gwynneth TaylorAsked:
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Ejgil HedegaardCommented:
In the Excel formula you calculate the square root of height * weight and then divide by 3600.
It should be the square root of height * weight / 3600.

=SQRT(X172*N172/3600)

That is the same as =(X172*N172/3600)^0.5 in the BSA formula
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Gwynneth TaylorAuthor Commented:
Thanks for correcting me and your quick response.
Kind regards.
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