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OpenStudy (anonymous):
Joe is hiking in national park wilderness. His radio transmits signals as far as the horizon. Use the formula d = square root of 1.5h , where d is the line-of-sight distance to the horizon in miles and h is height in feet. Joe sets his receiver on the ground. What is the farthest away that a transmitter 4 ft above the ground can be in order to reach Joe?
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