帮莪解决几道题目..远快越好.现在就要用.谢谢了

口香糖做套套2022-10-04 11:39:541条回答

帮莪解决几道题目..远快越好.现在就要用.谢谢了
1.火车轮子的直径约为50厘米,用仪表测出火车从甲站行驶到乙站时,轮子转过的圈数为10的六次方,那么甲,乙两站之间距离为多少千米?
2.一块铝合金他得长是200厘米,宽是150厘米,厚是2毫米,则这块铝合金得体积是多少m3?
3.给家具表面喷漆,若油漆喷涂厚度应不小于200微米,则5L得油漆最多可喷涂家具表面多少平方米?
(注意一下单位.要换算得谢谢)
能写几题写几题..谢谢了..求!

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莫教 共回答了16个问题 | 采纳率87.5%
1)距离=2πR×1 000 000=2×π×50×1000 000=100 000 000π厘米=1000π千米 2)200厘米=2米,150厘米=1.5米,2毫米=0.002米 V=abh=2×1.5×0.002=0.006立方米(m³) 3)200微米=0.0002米.5L=0.005立方米 S=V/h=0.0...
1年前

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