Regular Polygon Area Table: Area by Number of sides
Reference table of area for Regular Polygon Area across a range of number of sides values — exact, engine-computed figures you can read off at a glance.
Regular Polygon Area Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Area
259.8000
- Perimeter
- 60.00
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Regular Polygon Area Calculator
The Regular Polygon Area Calculator works out your area, along with 1 related figure in an instant. Enter number of sides, side length and apothem (centre to edge) and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the number of sides.
- Enter the side length.
- Enter the apothem (centre to edge).
- Read off your area, together with perimeter — the calculator updates automatically, with no button to press.
Formula
The Regular Polygon Area Calculator uses the formula:
Area = 0.5 × Number of sides × Side length × Apothem (centre to edge)
Worked example
For example, with number of sides of 6, side length of 10 and apothem (centre to edge) of 8.66, the area is 259.8000.
| Number of sides | 6 |
|---|---|
| Side length | 10 |
| Apothem (centre to edge) | 8.66 |
| Area | 259.8000 |
|---|---|
| Perimeter | 60.00 |
Results are estimates for educational use, not professional advice.
Key terms explained
- Perimeter
- The total distance around the outside of a two-dimensional shape.
- Area
- The amount of two-dimensional space a shape covers, measured in square units.
Frequently asked questions
Multiply half the perimeter by the apothem: area = ½ × sides × side length × apothem. A hexagon of side 10 and apothem 8.66 is about 259.8.
It is the distance from the centre to the midpoint of a side, the radius of the inscribed circle.
Each polygon splits into triangles with the apothem as height, so half-base times height summed gives the area.
Yes, for any shape with three or more equal sides, as long as you enter the matching apothem.
Enter the number of sides. Enter the side length. Enter the apothem (centre to edge). Read off your area, together with perimeter — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Regular Polygon Area: Formula, Steps & Examples
Learn how to calculate Regular Polygon Area — the formula explained step by step, with worked examples and a free calculator to check your answer.