How to find the perimeter of an ellipse when its area is known The courtyard of the unit is elliptical. We only know that the area is 19000 square meters. Can we work out the perimeter? That is, the length of the courtyard wall? If the energy is not here to ask, ah, there are no original drawings, many people can not go, depressed, tomorrow the boss will have the result, depressed,

Insufficient conditions

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