A room is elliptic with vertical walls 6 feet high

[sunflower]

A room is elliptic with vertical walls 6 feet high and an ellipsoidal ceiling. If it is 40 feet long and 20 feet wide, where should two people stand (other than next to each other) so that they can whisper to each other without being heard by others in the room?

 

[stapel]

A room is elliptic with vertical walls 6 feet high and an ellipsoidal ceiling. If it is 40 feet long and 20 feet wide, where should two people stand (other than next to each other) so that they can whisper to each other without being heard by others in the room?

Study this example. Then reply with what you've been able to do.

Please be complete. Thank you!