Question: The vertical cross section of a culvert under a road is elliptical. The culvert is 18 m wide and 12 m high. Find an equation

The vertical cross section of a culvert under a road is elliptical. The culvert is 18 m wide and 12 m high. Find an equation to represent the perimeter of the culvert with the origin at road level and 2.0 m above the top of the culvert. See Fig. 21.89.

2 m 12 m road -18 m- Fig. 21.89

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