一个圆柱型铁件,圆柱中心开孔,孔径是3cm现在只知道总重量是10KG,圆柱高度是2cm,铁的密度是7.5求外径是多少?和运算公式?
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/09 09:37:05
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