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Side Length of a Regular Polygon from Its Area

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Calculates the side lengths and perimeter of a regular polygon based on its area.
Area S
Regular Polygon n
(Equilateral triangle = 3, Square = 4, 5, ...)
Sides of a Regular Polygon a 
Perimeter of a Regular Polygon L 
\(\normalsize Regular\ polygon\\ (1)\ side:\hspace{50px} a=\sqrt{\large\frac{4S\cdot tan({\large\frac{\pi}{n})}}{n}}\\ (2)\ perimeter:\ L=na\\ \)

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