How far apart are the foci of an ellipse with a major axis of 34 feet and a minor axis of 16 feet?

a-15
b-12
c-9
d-30

my answer is 9

4 answers

I'm sorry I copied the wrong answer

it should be 30
30 is correct
thanks
What are the foci of the ellipse given by the equation 225x^2 + 144y^2=32,400