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| + | Blue line => <math> L/2 = \sqrt{R^2-D^2}</math> | ||
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| + | Length <math> = 2*(L/2)=2*\sqrt{R^2-D^2}</math> | ||
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| + | let X be the length of chord | ||
Revision as of 16:40, 6 October 2008
Blue line => $ L/2 = \sqrt{R^2-D^2} $
Length $ = 2*(L/2)=2*\sqrt{R^2-D^2} $
let X be the length of chord
