这个圆的半径是多少厘米

  • 时间:2020-04-27 15:03:15
  • 分类:数学世界
  • 阅读:187 次

这个圆的半径是多少厘米?在一张长6厘米、宽4厘米的长方形约上画一个最大的圆,这个圆的半径是多少厘米?如果画一个最大的半圆,这个半圆的半径是多少厘米?

数学题解答:宽是4厘米的话,最大的正方形边长就是4厘米,所以圆的半径就是2厘米(4÷2=2);如果画最大的半圆,宽要是长的一半,所以这个圆的半径是3厘米(6÷2=3)。

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