Areas and Dimensions of a Regular Polygon

Enter n, s and r or n, s and R
r
R
s
n


Area =  
a =  
B =  

Formulas:

A = Area
n = number of sides r = radius of inscribed circle
R = radius of circumscribed circle
s = length of each side
A =
A =
R =
r =
s =
a = 360° / n
B = 360° - a

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