What is the standard form equation for an ellipse with vertices (–4, 0) and (4, 0), endpoints of major axis (0, –5) and (0, 5), and foci (–3, 0) and (3, 0)?
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What is the length of the perpendicular bisector from the midpoint of AB to side AC in triangle ABC?
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What is the mathematical expression to find the area of a circle with radius r?