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OpenStudy (anonymous):
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OpenStudy (anonymous):
A whispering gallery is an enclosed vault in the shape of an ellipse. If a person stands at one of the foci of the whispering gallery and whispers, the whisper can be heard clearly at the other foci of the whispering gallery. A certain whispering gallery has an eccentricity of 0.2 and a semi-major axis of 250 feet. If person A stands at one of the foci of the whispering gallery and whispers, at what distance away from person A must person B stand to hear the whisper clearly?
OpenStudy (anonymous):
A) 25 feet B) 50 feet C) 75 feet D) 100 feet
ILovePuppiesLol (ilovepuppieslol):
which do u think
OpenStudy (anonymous):
C?
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