A rectangle is constructed with its base on the diameter of a semicircle with radius 18 and with its two other vertices on the semicircle. What are the dimensions of the rectangle with maximum​ area? Let A be the area of the rectangle. What is the objective function in terms of the base of the​ rectangle, x? The interval of interest of the objective function is? The rectangle with maximum area has base  (enter your response here) and height (enter your response here)

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