题目内容

A rectangular tabletop consists of a piece of laminated wood bordered by a thin metals trip along its four edges．The surface area of the tabletop is x square feet，and the total length of the strip before it was attached was x feet．If the tabletop is 3 feet wide，what is its approximate length，in feet（）

A. 12
B. 10
C. 9
D. 8
E. 6

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