The sides of a nuclear power plant cooling tower form a hyperbola. The diameter of the bottom of the tower is 294 feet. The smallest diameter of the tower is 156 which is 405 feet above the ground. The tower is 580 feet tall. 156 ft 580 ft 405 ft 294 ft Photo remixed from work by i Sediáček 21, cc BY SA Find the width of the tower at a height of 72 feet, to 1 decimal place. feet.

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