Question: What is the formula for finding the area of a circle?
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What are the characteristics of a hyperbola with a major axis along the x-axis, center at (0,0), vertices at (-5, 0) and (5, 0), and foci at (-4, 0) and (4, 0)?
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What is the variance of the numbers 5, 8, 12, 15, and 20?