What is the equation of an ellipse with its center at (h, k), major axis of length 2a and minor axis of length 2b?
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What is the area of a circle with a radius of 5? How does it compare to the area of a rectangle with length 10 and width 6? Is it larger or smaller? Explain.
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What is the range of the sine function in radians when the domain is restricted to angles between 0 and 2π?