An Architect Wishes to Design a Large Room That Will

Multiple Choice

An architect wishes to design a large room that will be a whispering gallery. The ceiling of the room has a cross section that is an ellipse with a major axis measuring 286 feet and a minor axis measuring 90 feet. Assume the center is at (0, 0) and the major axis lies on the x -axis. How far to the right and left of center are the foci located? Approximate the answer to the nearest tenth of a foot.

A) 135.7 ft
B) 271.5 ft
C) 45.0 ft
D) 143.0 ft
E) 196.0 ft