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Equation

       
    Name Area of a Regular Polygon
 
    Equation A = n s r 2 = 1 4 n s 2 cot ( π n )
 
    Definition of terms

A = area, a = length of one side, b = length of the side perpendicular to the side of length a.

 
    Comments

  The area of a rectangle is equal to the product of the lengths of two sides joined at a corner.

 
    References CRC Standard Mathematical Tables , 26th edition, CRC, 1981
       


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