. Question 13

Question 13 A person in a whispering gallery standing at one focus of the ellipse can whisper and be heard by a person standing at the other focus because all the sound waves that reach the ceiling are reflected to the other person. If a whispering gallery has a length of 140 feet, and the foci are located 30 feet from the center, find the height of the ceiling at the center. Round your answer to 2 decimal places. feet Jump to Answer