题目内容
If the radius(半径) of circle Ⅲ in the figure3(图3) is 
of the radius of circle Ⅱ,and the radius of circle Ⅱ is 
of the radius of circle Ⅰ,then the area of the shaded region iswhat part of the area of circle Ⅰ?( )
(A)
; (B)
;(C)
;(D)
 |
,A
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