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如图,是某工件的三视图,其中圆的半径为10cm,等腰三角形的高为30cm,则此工...
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如图,是某工件的三视图,其中圆的半径为10cm,等腰三角形的高为30cm,则此工件的侧面积是( )cm
2.
A.150π
B.300π
C.50
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π
D.100
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π
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