GRE考试

【单选题】Let P and Q be points which are two inches apart, and let
A、be the area, in square inches, of a circle which passes through P and Q. Which of the following is the set of all possible values for
A、
A、0＜A
B、0＜
A、≤π
C、A=π
D、A＞π
E、
A、≥π
网考网参考答案：E
网考网解析：
If PQ is a diameter of the circle, then the radius is 1 and A, the area, is π. This is the smallest possible value of A, but A can be any number larger than π if the radius is made sufficiently large, as shown by the figures below. [*] The answer is A ≥ π. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>