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A178809
Decimal expansion of the area of the regular 12-gon (dodecagon) of edge length 1.
13
1, 1, 1, 9, 6, 1, 5, 2, 4, 2, 2, 7, 0, 6, 6, 3, 1, 8, 8, 0, 5, 8, 2, 3, 3, 9, 0, 2, 4, 5, 1, 7, 6, 1, 7, 1, 0, 0, 8, 2, 8, 4, 1, 5, 7, 6, 1, 4, 3, 1, 1, 4, 1, 8, 8, 4, 1, 6, 7, 4, 2, 0, 9, 3, 8, 3, 5, 5, 7, 9, 9, 0, 5, 0, 7, 2, 6, 4, 0, 0, 1, 1, 1, 2, 4, 3, 4, 3, 8, 5, 6, 0, 2, 7, 1, 7, 4, 5, 7, 2, 7, 0, 2, 6, 8
OFFSET
2,4
COMMENTS
Surface area of a regular hexagonal prism with unit side length and height. - Wesley Ivan Hurt, May 04 2021
FORMULA
Equals 6+3*sqrt(3).
Equals 1 + A176532 = 6 + A010482. - R. J. Mathar, Jun 25 2010
EXAMPLE
11.196152422706631880582339024517617100828415761431141884167420938355...
MATHEMATICA
RealDigits[N[6+3*Sqrt[3], 150]][[1]]
PROG
(PARI) sqrt(27)+6 \\ Charles R Greathouse IV, Apr 25 2016
CROSSREFS
KEYWORD
cons,nonn,easy
AUTHOR
EXTENSIONS
Offset corrected and keyword:cons inserted by R. J. Mathar, Jun 25 2010
STATUS
approved