GMAT考试

【单选题】The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether
A、Statement (1)ALONE、is sufficient, but statement (2) alone is not sufficient.
B、Statement (2)ALONE、is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statementALONE、is sufficient.
D、EACH statementALONE、is sufficient.
Ｅ. Statements (1) and (2) TOGETHER are NOT sufficient.
The figure above shows the shape of a flowerbeD、If arcs WZ and XY are semicircles and WXYZ is a square, what is the area of the flowerbed

(1) The perimeter of square WXYZ is 24.
(2) The diagonal

网考网参考答案：D
网考网解析：
alone is sufficient; if the perimeter of the square is 24, then the length of each side is 24/4=6, and the radius of each of the semicircles is 6/2=3. The area of the square is 6×6=36, and since the formula for the area of a circle is πr 2 , the area of the semicircles is 2×1/2[π(3×3)]=9π; 36+9π is the area of the flowerbed. (2) alone is sufficient; the side of a square is the diagonal divided by (this is derived from the Pythagorean theorem), so the sides are equal to 6; by following the same process used with statement (1), we can determine the area of the flowerbed. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>