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Mathematics 7 Online
OpenStudy (anonymous):

A rectangular board is 2 by 18 units. The foci of an ellipse are located to produce the largest area. A string is connected to the foci and pulled taut by a pencil in order to draw the ellipse. Find the length of the string

OpenStudy (anonymous):

The rectangle and the ellipse are not related; seems like something is missing, more info needed.

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