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OpenStudy (anonymous):
A designer proposes a parabolic satellite dish 3 feet in diameter and 9 inches deep. a)What is the equation for the cross section of the parabolic dish? Assume that it has vertex (0,0) . b) What is the focal length (the distance between the vertex and the focal point)? c)What is the diameter of the dish at the focal point?
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OpenStudy (anonymous):
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