Question 852536
ellipse
foci | ((-sqrt(5), 0)  |  (sqrt(5), 0))=((-2.23607, 0)  |  (2.23607, 0))
vertices | (-3, 0)  |  (3, 0)
center | (0, 0)
semimajor axis length | 3
semiminor axis length | 2
area | 6 pi=18.8496
perimeter | 12 E(5/9)=15.8654
focal parameter | 4/sqrt(5)=1.78885
eccentricity | sqrt(5)/3=0.745356