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【OG20-P284-358题】
The rectangular rug shown in the figure above has an accent border. What is the area of the portion of the rug that excludes the border?
(1) The perimeter of the rug is 44 feet.
(2) The width of the border on all sides is 1 foot.
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题干:求rug的面积
条件1:周长是44,无法确定具体的长和宽是多少,不充分
条件2:border的宽是1,但是rug的长宽未知,不充分
结合:还是无法确定具体的长和宽是多少,面积无法求出,不充分
题目讨论 (4条评论)

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Audreeyy
问一下大家 这个地毯包括这个边框么,就是说条件一的周长是算上边框的么
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0 回复 2021-08-29 17:24:43
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FallonNGAI
题干又没看好,是求the area of the portion of the rug that excludes the border,不是求the area of the border!
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0 回复 2019-04-09 20:50:59
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imAmber
这题为什么不能是 设长x 宽y xy - (x-2)(y-2)=2(x+y)-4 = 44-4 = 40 这不就解出来吗?
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0 回复 2018-10-21 15:09:35
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zaizai6666回复imAmber
你看错题目了,题目求得是the area of the portion of the rug that excludes the border, 而不是the border.
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0 回复 2018-10-24 23:38:16
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lchGMAT回复imAmber
因为他说rug有一个border
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0 回复 2020-12-11 15:36:10
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茗希
这个题怎么做?求大神解答
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0 回复 2018-08-23 00:12:43