The building materials factory produces two sizes of columns. The cross-sectional area of a large cylinder is three times that of a small cylinder. How many times the radius of the bottom of a large cylinder is that of a small cylinder?
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A$$\sqrt{2}$$
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B$$\sqrt{3}$$
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C2
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D$$\sqrt{5}$$
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E$$\sqrt{6}$$
显示答案
正确答案: B