Question

How far apart are the foci of an ellipse with a major axis of 26 feet and a minor axis of 24 feet?

4 feet
5 feet
10 feet
20 feet

Answer 1

Did you find c?

Answer 2

Not yet, is this right so far? 2a=26 and 2b=24

Answer 3

yes

Answer 4

Then I do a^2+b^2=c^2?

Answer 5

When a=13 and b=12

Answer 6

I believe that is for a hyperbola. This is an ellipse.

Answer 7

a^2-b^2=c^2?

Answer 8

yes

Answer 9

c=5

Answer 10

is that my answer?

Answer 11

yes

Answer 12

thanks!

Answer 13

So how far apart are the foci?

Answer 14

5 Feet

Answer 15

tsk tsk

Answer 16

One is (c,0) and the other is (-c,0)

Answer 17

or wait is it 10

Answer 18

That's better.