Jim, standing at one focus of a whispering gallery,is 6 feet from the nearest wall.His friend is standing at the other focus, 100 feet away. What is the length of this whispering gallery? How high is its elliptical ceiling at the center?

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Jim, standing at one focus of a whispering gallery,is 6 feet from the nearest wall.His friend is standing at the other focus, 100 feet away. What is the length of this whispering gallery? How high is its elliptical ceiling at the center?

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