GeometryRegular Hexagon Formulas Sir SagarJanuary 10, 2015January 10, 20150 Regular Hexagon Formulas Side : a Internal angle: Slant height: m Radius of inscribed circle: r Radius of circumscribed circle: R Perimeter: p Area: S 1. 2. 3. R =a 4. L = 6a 5. S = pr = , Where p = .