As shown in the figure, a semicircle is spliced with a rectangle. The rectangle is x in width and y in length. If the area of semicircle is 1/3 of the area of rectangle. What is the ratio of the arc of the semicircle to x?
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数学PS
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As shown in the figure, a semicircle is spliced with a rectangle. The rectangle is x in width and y in length. If the area of semicircle is 1/3 of the area of rectangle. What is the ratio of the arc of the semicircle to x?
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正确答案: B