Multiple Choice
A vertical cross section of a cooling tower is a portion of a hyperbola, as shown in the diagram below. The standard form of the equation of the hyperbolic cross section is 
where x and y are measured in feet. The horizontal cross sections of the tower are circles. 
Find the radius of the top of the tower. Round to the nearest foot.
A) 90 feet
B) 88 feet
C) 93 feet
D) 87 feet
E) 85 feet
Correct Answer:
Verified
Correct Answer:
Verified
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