The floor of conference hall is made in a shape of ellipse. if the largest
chord has length 20 meters and the smallest is 16m what is the length
between the foci?
a. 24m b. 12m c .9root2 m d. 6m

b

Step-by-step explanation:

I'm pretty sure but have a good day loves

B.  12 m.

Step-by-step explanation:

The focal length f is related to the semi minor axis (b)  and the semi major axis (a) as follows: f^2 = a^2 - b^2.

Here we have  a = 1/2* 20 = 10 and b = 1/2 * 16 = 8.

f^2 =  10^2 - 8^2 = 36

so f = 6.

So the length between the focii is 2*6 = 12m.

hi there!

question 1 answer: p/q can be terminating when q = 5^m * 2^n

question 2 answer: -1 and -1

question 3 answer: -4

question 4 answer: 5/12

hope this : )