230问答网 > 一种精密的零件,画在图上是12厘米,而实际得长度是3毫米.求这幅图的比例尺

一种精密的零件,画在图上是12厘米,而实际得长度是3毫米.求这幅图的比例尺

2025-03-31 01:07:52
推荐回答（4个）
回答1：

您好：

12cm=120mm
比例尺 120:3=40:1

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回答2：

Sn=1x[1-(-2)^51]/[1-(-2)]
=(2^51+1)/

回答3：

12CM:3MM =12CM:30CM=1:2.5

回答4：

1/40

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