出国留学首选一诺留学

　　例题：OG13-P277-30

　　A circular tub has a band painted around its circumference, as shown above. What is the surface area of this painted band?(1) x = 0.5(2) The height of the tub is 1 meter.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.

　　解析：如图所示，一个桶的阴影部分为涂漆的地方，问涂油漆的地方的表面积是多少要求表面积为多少，需要知道桶的周长为多少，x为多少条件一只告诉了x，不充分;条件二告诉了桶高1米，无关条件，不充分。联立，同样无法求出桶的周长，所以也就求不出表面积，因此选E

　　例题：OG15-P284-102What is the number of cans that can be packed in a certain carton?(1) The interior volume of this carton is 2,304 cubic inches.(2) The exterior of each can is6 inches high and has a diameter of 4 inches.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.

　　解析：问carton里面能装多少个can条件一 知道carton的体积条件二 知道can的体积注意提问是number这个就很怪，因为不是问最多装多少或最少装多少。我们不知道carton的具体形状，假设carton的底面无限小，而高无限高。则一个都装不了。所以能装多少个不是确定的，而是变化的。因此E

　　以上就是关于GMAT数学立体几何的内容介绍，同学们如果还有任何关于出国留学的问题，可以拨打一诺留学的免费热线400-003-6508或者010-62680991进行咨询，或者点击一诺留学官方网站http://www.yinuoedu.net/页面的“在线咨询”与一诺留学专家直接对话。微信订阅号：留学圈 (微信帐号：yinuoliuxue )