2015年9月7日SAT官方每日一題

2015/09/07 瀏覽次數:2 收藏
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  標題範例:Mathematics > Standard Multiple Choice

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

  The perimeter of a 7-sided figure is 15. If the length of each side of the figure is increased by 2 units, what is the perimeter of the new figure?

  (A) 17

  (B) 22

  (C) 24

  (D) 29

  (E) 30

  謎底

  【剖析】

  The perimeter is the sum of the lengths of all the sides. Since each of the seven sides is to be increased by 2, there will be a total increase of 14 in the perimeter. The original perimeter, 15, plus the increase, 14, gives the new perimeter, 29.