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  3. O is the center of the circle. The area of the shaded region is 3 ∏. Column A Column B The degree mea

O is the center of the circle. The area of the shaded region is 3 ∏. Column A Column B The degree mea

admin2009-05-19  48
问题
O is the center of the circle. The area of the shaded region is 3 ∏.

Column A                           Column B
The degree measure of △AOB        120
选项 A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given
答案C
解析 O是圆心，阴影区的面积是3∏
解：本题正确答案是(C)。该题主要考扇形的面积与圆的面积之间的关系。有些考生认为∠AOB既可以是外角以可以是内角，所以本题的正确答案应该为(D)。在这一点上这类考生应当注意的：在GRE数学中，指某角时，若无特殊指明或加上某些符号表示时，一般指内角。
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本试题收录于： GRE QUANTITATIVE题库GRE分类
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