Question 830604
ellipse
foci | ((-2 sqrt(6), 0)  |  (2 sqrt(6), 0))=
((-4.89898, 0)  |  (4.89898, 0))
vertices | (-7, 0)  |  (7, 0)
center | (0, 0)
semimajor axis length | 7
semiminor axis length | 5
area | 35 pi=109.956
perimeter | 28 E(24/49)=37.9614
focal parameter | 25/(2 sqrt(6))=5.1031
eccentricity | (2 sqrt(6))/7=0.699854