The area of the ellipse using the formula A = πab. Foci. The distance from the coordinate center on the major-axis — both directions — to the elliptical focal points. Use the foci distance plus the pin and string method to

There are two general equations for an ellipse. Horizontal ellipse equation (x−h)2 a2 + (y−k)2 b2 = 1 ( x - h) 2 a 2 + ( y - k) 2 b 2 = 1 Vertical ellipse equation (y−k)2 a2 + (x−h)2 b2 = 1 ( y - k) 2 a 2

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