SAT官方每日一题：2011年10月13日
2012-03-04来源:互联网
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2011年10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.
In the figure above, the length of 
is 
and the length of 
is 
. If a point is chosen at random from 
, what is the probability that the point will lie on 
?
A. 
B. 
C. 
D. 
E. 
正确答案:C 解析: The probability that a point chosen from |
will lie on 
is the ratio of the length of 
to the length of 
. The length of 
is 
and the length of 
is 
, so the length of 
is 
. Therefore, the ratio of the length of 
to the length of 
is 
.
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