OFFSET
1,2
COMMENTS
6/Pi = Volume of the cuboid (If L1>L2>L3) / Volume of the inscribed ellipsoid.
6/Pi = Volume of the cuboid (If L1>(L2=L3)) / Volume of the inscribed spheroid.
6/Pi = Volume of the regular hexahedron (or cube) / Volume of the inscribed Sphere.
6/Pi = 1 / Arc of 30 degrees.
6/Pi = Volume of the cuboid (If L1<(L2=L3)) / Volume of the inscribed spheroid.
6/Pi = Surface area of the regular hexahedron (or cube) / surface area of the inscribed sphere.
FORMULA
Equals Product_{k>=1} (2k+1)^3 / ( (2k)^2*(2k+3) ). - Federico Provvedi, Nov 09 2024
EXAMPLE
1.90985931710274402922660516047... .
MATHEMATICA
RealDigits[N[6/Pi, 200]] - Erich Friedman, Mar 22 2008
PROG
(PARI) 6/Pi \\ Charles R Greathouse IV, Dec 31 2011
CROSSREFS
KEYWORD
AUTHOR
Omar E. Pol, Aug 26 2007, Nov 02 2007
EXTENSIONS
More terms from Erich Friedman, Mar 22 2008
STATUS
approved