A179022 Decimal expansion of 3*sqrt(39)/4.

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

Offset: 1

Author

Vladimir Joseph Stephan Orlovsky, Jun 25 2010

Keywords

• nonn
• cons
• easy

Comments

Area of the obtuse scalene triangle with sides of lengths 2, 5 and 6. 3rd smallest area of triangle with distinct integer sides.

Crossrefs

Cf. A140239, A179021.

Programs

Mathematica

a=2;b=5;c=6;s=(a+b+c)/2;area=Sqrt[s*(s-a)*(s-b)*(s-c)];RealDigits[N[area,200]]

PARI

sqrt(351)/4 \\ Charles R Greathouse IV, Apr 25 2016