Apothem of a Regular Polygon Calculation

The calculator calculates the apothem of a regular polygon based on given values of the side length, circumradius and number of sides for selected type of polygon. User can select the unit as meter, centimeter, inches and feet.

Select a polygon
Enter Side Length or Circumradius
Enter the Side Length: (a)
Enter the Circumradius: (R)
Enter the number of sides: (n)
Apothem of a regular polygon (r):