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Perimeter and Surface Area Formulas

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Ellipse Perimeter and Surface Area Formulas
Ellipse

Ellipse

Todd Helmenstine
An ellipse or oval is a figure that is traced out where the sum of the distances between two fixed points is a constant.
The shortest distance between the center of an ellipse to the edge is called the semiminor axis ( r1 )
The longest distance between the center of an ellipse to the edge is called the semimajor axis ( r2 )

Area = πr1r2

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