Hi, there is something wrong with oblate spheroid formula calculations in my code:

e = math.sqrt(1 - height**2 / width**2)
s = 2 * math.pi * (width**2) * (1 + (1-e**2)/(e * math.tanh(e)))

it gives [16.76, 35.51] instead of [16.76, 34.69]

Created at: Jan. 27, 2017, 1:15 p.m.; Updated at: Jan. 27, 2017, 2:11 p.m.

The question is resolved.