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Math Calculators
Regular Polygon Area Calculator
Calculate the area and perimeter of a regular polygon from its number of sides and side length, in the unit of your choice.
Area
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Perimeter
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About the Regular Polygon Area Calculator
A regular polygon has equal sides and angles. Its area can be found directly from the number of sides and the side length. The side length has its own unit selector, and area and perimeter each have their own too, so you can convert freely.
Formula: Area = (n × s²) ÷ (4 × tan(π/n)), where n is the number of sides and s is the side length
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