400-1816-180
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DS381-404
【OG20-P294-454題】
In the figure above, if the area of triangular region D is 4, what is the length of a side of square region A ?
(1) The area of square region B is 9.
(2) The area of square region C is 64/9.
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 statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D.EACH statement ALONE is sufficient.
E.Statements (1) and (2) TOGETHER are NOT sufficient.
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答案：
D
已知三角
1 可知b的邊長為3 那么c的邊長為8/3 所以 根據(jù)勾股定理可知A的面積=b的面積+c的面積=9+64/9 充分
同理 2可求出c的邊長 即可求出a的面積 也充分
選D
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