A179021 Decimal expansion of sqrt(231)/4.

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

Offset: 1

Author

Vladimir Joseph Stephan Orlovsky, Jun 25 2010

Keywords

• nonn
• cons

Comments

Area of the obtuse scalene triangle with sides of lengths 2, 4 and 5. Second smallest area of triangle with distinct integer sides.

Examples

			3.79967103839266590791718605150991125939558161542555907919914059630091...
		

Crossrefs

Cf. A140239.

Programs

Mathematica

a=2;b=4;c=5;s=(a+b+c)/2;area=Sqrt[s*(s-a)*(s-b)*(s-c)];RealDigits[N[area,200]]
RealDigits[Sqrt[231]/4,10,120][[1]] (* Harvey P. Dale, Apr 08 2018 *)