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Mathematics

Regular Polygon Area

Regular Polygon Calculator

Number of Sides
Side Length
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Variable Legend

n= number of sidess= side lengthR= circumradiusa= apothem

Area from side length

Area from circumradius

Area from apothem

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Pro Tip

Always verify your input values before calculating. For regular polygon area, small input errors can compound and significantly affect the final result.

Difficulty:Beginner

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The mathematical principles behind regular polygon area have practical applications across multiple industries and have been refined through decades of real-world use.

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Mathematically verified
Reviewed May 2026
Used 33K+ times
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