Y = A(cos(x/l)(C-1))
X = (L/C)(cosh^-1(1+Y/A))
Where, A = fc/((Qb/Qt)-1) = 68.7672
C = cosh^-1(Qb/Qt) = 3.0022
fc = Max. Ht. of Centriod = 625.0925
Qb = Max. X-Sec. @ Arch Base = 1262.6651
Qt = Min. X-Sec. @ Arch Top = 125.1406
L = Half of Centroid @ Arch Base = 299.2239
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