Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Geometry
Regular Polygon Area Calculator
Calculate the area, perimeter, and interior angles of any regular polygon — from equilateral triangles to dodecagons — given just the side length. Perfect for tiling, architecture, and geometry coursework.
Fill in the required fields to see your result.
Geometry
Cylinder Surface Area Calculator
Calculates the total outer surface area of a closed cylinder — both circular ends plus the curved side — using A = 2πr(r + h). Useful for manufacturing, packaging, painting estimates, and material costing for cans, tanks, pipes, and drums.
Fill in the required fields to see your result.
Key differences
| Regular Polygon Area Calculator | Cylinder Surface Area Calculator | |
|---|---|---|
| Category | Geometry | Geometry |
| Inputs required | 2 | 2 |
| Result | Polygon Area (square units) | Surface Area (square units) |
| What it does | Calculate the area, perimeter, and interior angles of any regular polygon — from equilateral triangles to dodecagons — given just the side length. Perfect for tiling, architecture, and geometry coursework. | Calculates the total outer surface area of a closed cylinder — both circular ends plus the curved side — using A = 2πr(r + h). Useful for manufacturing, packaging, painting estimates, and material costing for cans, tanks, pipes, and drums. |