题目信息

In the diagram above, O is the center of the circle and angle AOB = 144º. What is the area of the circle?
Statement #1: The area of sector AOB is 40% of the area of the circle
Statement #2: Arc ACB has a length of 14$$\pi$$.
A:Statement 1 ALONE is sufficient to answer the question, but statement 2 alone is NOT sufficient.
B:Statement 2 ALONE is sufficient to answer the question, but statement 1 alone is NOT sufficient.
C:BOTH statements 1 and 2 TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient.
D:Each statement ALONE is sufficient to answer the question.
E:Statement 1 and 2 TOGETHER are NOT sufficient to answer the question.
参考答案及共享解析

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已选答案:
正确答案:
B:Statement 2 ALONE is sufficient to answer the question, but statement 1 alone is NOT sufficient.
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题目来源
Magoosh