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The figure below shows two concentric circles, each with center O. Given that the larger circle has radius 12 and the smaller ci
The figure below shows two concentric circles, each with center O. Given that the larger circle has radius 12 and the smaller ci
admin
2018-12-14
17
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
选项
答案
(a)24π (b)49π (c)95π
解析
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