An arch of a bridge is semi-elliptical, with major axis
Chapter 10, Problem 10.9.12(choose chapter or problem)
An arch of a bridge is semi-elliptical, with major axis horizontal. The base of the arch is 40 feet across, and the highest part of the arch is 12 feet above the horizontal roadway. Approximate the height, to one decimal place, of the arch 8 feet from the center of the base.
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