数学题:把一个棱长为4分米的正方体填满水

  • 时间:2020-05-07 11:42:14
  • 分类:数学世界
  • 阅读:156 次

数学题:把一个棱长为4分米的正方体填满水,全部倒进一个底面周长25.12dm、高30dm的圆柱中,求水深?

数学题解答:先求出水的体积:43=64(立方分米)

再算出圆柱容器的底面积:25.12÷3.14÷2=4(分米),3.14×42=50.24(平方分米)

圆柱中的水深:64÷50.24≈1.27(分米)

求水深的依据是:圆柱的体积÷底面积=高

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