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(2004•湖州)圆柱的底面半径为5cm,高为12cm,则该圆柱的侧面积等于( ...
(2004•湖州)圆柱的底面半径为5cm,高为12cm,则该圆柱的侧面积等于( )
A.60cm2
B.60πcm2
C.120cm2
D.120πcm2
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