3×3×3-1×1×1×6,
=27-6,
=21(立方厘米).
答:它余下的体积是21立方厘米.
一个棱长是3厘米的正方体木块,各面中心凿出一孔面边长是1厘米的正方形柱孔,它余下的体积是多少立方厘米?
一个棱长是3厘米的正方体木块,各面中心凿出一孔面边长是1厘米的正方形柱孔,它余下的体积是多少立方厘米?
数学人气:756 ℃时间:2019-09-29 03:19:04
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