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)
 |
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