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Mike bought in the store long pencil in the shape of a regular six-sided prism with a basic edge . At home, he sharpened a pencil on one side into the shape of a cone with a slant height of . Calculate what percentage of the pencil is sharpened?
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long pencil in the shape of a regular six-sided prism with a basic edge 
. At home, he sharpened a pencil on one side into the shape of a cone with a slant height of 
. Calculate what percentage of the pencil is sharpened?
