What is the time taken to travel a distance of 200 km at a constant speed of 100 km/h?
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What is the area of a triangle with side lengths of 5, 6, and 7?
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What is the equation of an ellipse when the center is at the origin, major axis is parallel to the x-axis, minor axis is parallel to the y-axis, and its semi-major and semi-minor axes are 3 and 2 respectively?