OFFSET
1,1
COMMENTS
A gauge point marked c^1 or c_1 ("c" with a superscripted or subscripted "1") on slide rule calculating devices in the 20th century. The Pickworth reference notes its use "in calculating the contents of cylinders".
REFERENCES
C. N. Pickworth, The Slide Rule, 24th Ed., Pitman, London, 1945, p. 53, Gauge Points.
LINKS
EXAMPLE
3.568248232305...
MAPLE
evalf(sqrt(40.0/Pi)) ; # R. J. Mathar, Sep 02 2020
MATHEMATICA
RealDigits[Sqrt[40/Pi], 10, 100][[1]] (* Amiram Eldar, Aug 15 2020 *)
PROG
(PARI) sqrt(40/Pi) \\ Michel Marcus, Aug 19 2020
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Peter Munn, Aug 15 2020
STATUS
approved