A200728 Decimal expansion of the circumradius of cyclic quadrilateral with sides 1, 2, 3, 4.

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

Offset: 1

Author

Zak Seidov, Nov 21 2011

Keywords

• nonn
• easy
• cons

Comments

Area is K = sqrt(24) = 4.89897948556635619639... (decimal expansion in A010480).

Examples

			2.0026024734496526299517...
		

Links

• Zak Seidov, Figure showing polygon.
• Index entries for algebraic numbers, degree 2

Crossrefs

Cf. A090654, A010480, A200113, A200257.

Programs

Mathematica

RealDigits[Sqrt[385/96], 10, 120][[1]] (* Amiram Eldar, Jun 27 2023 *)

PARI

sqrt(385/96) \\ Charles R Greathouse IV, Dec 28 2011

Formula

R = (385/96)^(1/2).