Câu 139: GMAT Section 2: Quantitative

The circles in the diagram are concentric circles. What is the area of the shaded region? (1) The area of the inner circle is 25Ï€.(2) The diameter of the larger circle is 20.

1. A. Statement (1), BY ITSELF, will suffice to solve the problem, but NOT statement (2) by itself.
2. B. Statement (2), BY ITSELF, will suffice to solve the problem, but NOT statement (1) by itself.
3. C. The problem can be solved using statement (1) and statement (2) TOGETHER, but not ONLY statement (1) or statement (2). — đáp án hiện tại
4. D. The problem can be solved using EITHER statement (1) only or statement (2) only.
5. E. The problem CANNOT be solved using statement (1) and statement (2) TOGETHER.