2015年9月7日SAT官方每日一题--数学选择!新东方网SAT每日一题栏目：整理发布SAT官方每日一题及SAT每日一题答案与解析,帮助考生从真题入手尽快熟悉考试内容,小伙伴们一起来做题吧！

　　Read the following SAT test question and then click on a button to select your answer.

　　The perimeter of a7-sided figure is15. If the length of each side of the figure is increased by2units, what is the perimeter of the new figure?

　　(A)17

　　(B)22

　　(C)24

　　(D)29

　　(E)30

　　Explanation

　　The perimeter is the sum of the lengths of all the sides. Since each of the seven sides is to be increased by2, there will be a total increase of14in the perimeter. The original perimeter,15, plus the increase,14, gives the new perimeter,29.

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　　（编辑：马菲）