SAT官方每日一题:2011年9月13日
 2012-03-04来源:互联网
        为了方便广大考生更好的复习,和谐英语网综合整理了SAT官方每日一题,以供各位考生考试复习参考,希望对考生复习有所帮助。愿大家都能取得好成绩,更多有关留学考试的资讯与辅导资料敬请关注和谐英语网留学考试频道。
2011年9月13日
考试类型:Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
  A right circular cylinder has height  and volume
 and volume  . What is the circumference of its base?
. What is the circumference of its base?
  A.
  B. 
  C. 
  D. 
  E.
| 正确答案:C 解析: The volume of a cylinder with radius  | 
 
       and height
 and height  is equal to
 is equal to  . Therefore,
. Therefore,  and
 and  , so the radius of the cylinder is
, so the radius of the cylinder is  . The circumference of a circle with radius
. The circumference of a circle with radius  is equal to
 is equal to  ; therefore, the circumference of the base is equal to
; therefore, the circumference of the base is equal to  .
. 
               
               
             手机网站
手机网站