把一个底面半径为4厘米的圆柱体的底面分成若干等份然后把圆柱切开拼成一个和它等底等高的�似长方体拼成的长方体的表面积比圆柱的表面积增加了 Template




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tomski把一个底面半径为4厘米的圆柱体的底面分成若干等份然后把圆柱切开拼成一个和它等底等高的�似长方体拼成的长方体的表面积比圆柱的表面积增加了 coloring