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Hi

It might sound strange but can I simplify it !!

I have only one variable for input which is diameter of a circle in millimeters.

This ultimately converts into a Guage value as in gun barrels. I can do this in Excel but haven't much of a clue about coding for a web page element.

So I have input X halved to give a radius

Then 4/3 pi r cubed gives the vloume in cu mm

Volume x 0.01134 which is the weight in grams of lead per cubic mm gives the weight of the sphere

this is then divided into 453.59237 which is the weight of a lb of lead in grams

result is number of spheres per lb lead i.e. the guage

So if we start with a bore of 23mm (0.906")

we end with a guage of 6.278 and a weight of 72.26gms (2.549 oz)

Help would be really appreciated.