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A179591 Decimal expansion of the surface area of pentagonal cupola with edge length 1. 5

%I #4 Mar 31 2012 12:38:37

%S 1,6,5,7,9,7,4,9,7,5,2,9,8,8,1,9,7,0,4,6,0,9,4,0,4,6,3,4,4,3,6,3,2,2,

%T 4,6,1,8,1,0,2,6,3,6,0,9,6,1,1,7,6,5,5,1,8,1,8,7,4,7,4,4,0,5,7,2,7,5,

%U 9,4,3,4,8,4,5,8,2,6,9,3,5,7,3,8,2,0,3,5,8,2,7,9,0,0,1,9,1,2,0,4,8,2,6,8,1

%N Decimal expansion of the surface area of pentagonal cupola with edge length 1.

%C Pentagonal cupola: 15 vertices, 25 edges, and 12 faces.

%H Wolfram Alpha, <a href="http://www.wolframalpha.com/input/?i=Johnson+solid+5">Johnson solid 5</a>

%F Digits of (20+sqrt(10*(80+31*sqrt(5)+sqrt(2175+930*sqrt(5)))))/4.

%e 16.5797497529881970460940463443632246181026360961176551818747440...

%t RealDigits[N[(20+Sqrt[10*(80+31*Sqrt[5]+Sqrt[2175+930*Sqrt[5]])])/4,200]]

%Y Cf. A001622, A010527, A102208, A179290, A179292, A179294, A179449, A179450, A179451, A179452, A179552, A179553, A019881, A179587, A179588, A179589, A179590.

%K nonn,cons,easy

%O 2,2

%A _Vladimir Joseph Stephan Orlovsky_, Jul 19 2010

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)