Mathematics, 19.10.2019 00:00 suevazpue

Broadcasters use a parabolic microphone on football sidelines to pick up field audio for broadcasting purposes. a certain parabolic microphone has a reflector dish with a diameter of 14 inches and a depth of 4 inches. if the receiver of the microphone is located at the focus of the reflector dish, how far from the vertex should the receiver be positioned?

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