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A179048 Decimal expansion of 25*sqrt(3)/4, the area of the equilateral triangle of side 5. 1

%I #19 Jul 07 2023 14:35:24

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

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

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

%N Decimal expansion of 25*sqrt(3)/4, the area of the equilateral triangle of side 5.

%F Equals 25*A002194/4.

%e 10.825317547305483084546539634411702293392532836314878925348793621574581355680..

%t a=b=c=5;area=Sqrt[(a+b-c)*(a-b+c)*(-a+b+c)*(a+b+c)]/4;RealDigits[N[area,200]]

%t RealDigits[(25*Sqrt[3])/4,10,120][[1]] (* _Harvey P. Dale_, May 30 2018 *)

%o (PARI) 25*sqrt(3)/4 \\ _Charles R Greathouse IV_, Jun 30 2011

%Y Cf. A002194, A010502, A120011, A179047.

%K nonn,cons,easy

%O 2,3

%A _Vladimir Joseph Stephan Orlovsky_, Jun 26 2010

%E Offset corrected, keyword:cons inserted - _R. J. Mathar_, Jun 28 2010

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)