The diameter of a circular fountain in a city park is 28 feet. A sidewalk that is 3.5 feet will be built around the fountain. Suppose that the fountain was exactly at the center of circular fountain and serving as the landmark for the center.   A. approximately does a stranger need to travel from the sidewalk to the middle?   B. Assuming that the center of the circular fountain is at the origin, what is the equation of the circle in general form?

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