2015年8月26日SAT官方每日一題

2015/08/26 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 circle shown above has center O and a radius of length 5. If the area of the shaded region is 20π, what is the value of X?

  (A) 18

  (B) 36

  (C) 45

  (D) 54

  (E) 72

  謎底:A

  【剖析】