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职称英语
The figure below shows two concentric circles, each with center O. Given that th
The figure below shows two concentric circles, each with center O. Given that th
游客
2024-01-12
48
管理
问题
The figure below shows two concentric circles, each with center O. Given that the larger circle has radius 12 and the smaller circle has radius 7, find the following.
(a)Circumference of the larger circle
(b)Area of the smaller circle
(c)Area of the shaded region
[br]
选项
答案
24π
解析
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