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

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, 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, 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

Offset: 2

Author

Vladimir Joseph Stephan Orlovsky, Jun 26 2010

Keywords

• nonn
• cons
• easy

Examples

			10.825317547305483084546539634411702293392532836314878925348793621574581355680..
		

Crossrefs

Cf. A002194, A010502, A120011, A179047.

Programs

Mathematica

a=b=c=5;area=Sqrt[(a+b-c)*(a-b+c)*(-a+b+c)*(a+b+c)]/4;RealDigits[N[area,200]]
RealDigits[(25*Sqrt[3])/4,10,120][[1]] (* Harvey P. Dale, May 30 2018 *)

PARI

25*sqrt(3)/4 \\ Charles R Greathouse IV, Jun 30 2011

Formula

Equals 25*A002194/4.

Extensions

Offset corrected, keyword:cons inserted - R. J. Mathar, Jun 28 2010