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`A = 3(2+sqrt(3)) ( "s" )^2`

Enter a value for all fields

The **Area of a Dodecagon** formula, (**A _{dodecagon}=3(2+?3)•s^{2}**), computes the area of a regular dodecagon, a polygon with 12 equal sides of length (

**s**- the length of the sides of the dodecagon

**Area of a Dodecagon(A)**: The area is returned in square meters. However, the area can be automatically converted to many other units like square feet and acres via the pull-down menu.

For the Volume of a Dodecagon shaped column, CLICK HERE.

A **regular dodecagon** has twelve equal sides and equal angles. The formula for the area of a dodecagon is:

where:

- A is the area of a dodecagon
- s is the length of a side

- Area of Circle - Circle approximates a polygon as the number of sides approaches infinity.
- Area of Triangle - Three Sides
- Area of Quadrilateral - Four Sides
- Area of Pentagon - Five Sides
- Area of Hexagon - Six Sides
- Area of Heptagon - Seven Sides
- Area of Octagon - Eight Sides
- Area of Nonagon - Nine Sides
- Area of Decagon - Ten Sides
- Area of Hendecagon - Eleven Sides
- Area of Dodecagon - Twelve Sides
- Area of Polygon - Any number of sides (n).