SOLUTION: Find the foci length for the ellipse: 3x^2 + 9y^2 = 27 Please help!

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Question 190045: Find the foci length for the ellipse: 3x^2 + 9y^2 = 27
Please help!
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2%2F9%2By%5E2%2F3=1
:
c%5E2=9%2B3=12
:
c=sqrt%2812%29=2sqrt%283%29
:
length of one foci is 2sqrt%283%29