2. 外语
  3. The area of the circular region with center O is 16∏, and v, w, x, y and z represent the lengths of the line segments. Column A

The area of the circular region with center O is 16∏, and v, w, x, y and z represent the lengths of the line segments. Column A

admin2009-05-19  92
问题
The area of the circular region with center O is 16∏, and v, w, x, y and z represent the lengths of the line segments.

Column A                    Column B
8 ∏                       v+w+x+y+z
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A
解析 以O为圆心的圆的面积为16 ，且v，w，x，y和z代表线段长度。
解：本题的正确答案为(A)。由圆O的面积等于16∏可求出其半径r=4，而v，w，x，y，z长度均等于半径，所以有：v+w+x+v+z=20<8∏
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