FORMULAS
Inches = mm times .03937
mm = Inches divided by .03937
Pi = 3.14
Area = 3.14 (Pi) times the radius squared
Circumference = Diameter times 3.14
Average Diameter of an Oval = Length plus Width divided by 2
Area of an Oval = Longest Diameter times Shortest Diameter times
.7854
Outside Bezel Length = Average Diameter of Stone plus Bezel
thickness times 3.14
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