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OG11-黃DS86

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楼主
发表于 2010-3-25 22:09:17 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
The length of the edging that surrounds circular garden K is 1/2 the length of the edging that surrounds circular garden G
What is the area of garden K (Assume taht the edging has negligible width)
1. The area of G is 25兀 square meters
2.The edging around G is 10兀 meters long.
答案D  黃色話線部分是什麼意思呢?
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沙发
发表于 2010-3-25 23:32:38 | 只看该作者
The length of the edging that surrounds circular garden K is 1/2 the length of the edging that surrounds circular garden G
What is the area of garden K (Assume taht the edging has negligible width)
1. The area of G is 25兀 square meters
2.The edging around G is 10兀 meters long.
答案D  黃色話線部分是什麼意思呢?
-- by 会员 Kath1985 (2010/3/25 22:09:17)

假设edging的宽度可以忽略不计
板凳
 楼主| 发表于 2010-3-29 21:05:11 | 只看该作者
喔 哈哈 我懂了 謝謝
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