Question

A room is elliptical. If it is 18 feet long (horizontally) and 8 feet wide (vertically), how far apart would two people be if they are standing at the foci?

Answer 1

please help

Answer 2

hahaha I know how you feel! Please don't worry!

Answer 3

haha

Answer 4

same question; same formula; just change the numbers ....
\[2\sqrt{(long/2)^2-(short/2)^2}\]
\[2\sqrt{(18/2)^2-(8/2)^2}\]

Answer 5

16.124... is what I get

Answer 6

i cont do the square part because i have no calculator

Answer 7

yes you can; people been doing it by hand for decades at least :)