数学题:如何按照一定的比例把小长方形扩大成与大长方形完全重的图形
- 时间:2020-06-07 17:53:28
- 分类:数学世界
- 阅读:106 次
数学题:一个长方形的长是8㎝,宽是6㎝;另一个,长方形的宽是9厘米,长是12厘米。如何按照一定的比例把小长方形扩大成与大长方形完全重的图形?(由王洋军同学提问)
数学题解答:先看第一个长方形,长宽比是:8:6=4:3
第二个长方形,长宽比是:12:9=4:3
所以两个长方形的形状是相同的,只是大小不同。
现在来解决问题,小长方形如果想与大长方形重合,则需要把长和宽都按照1.5:1的比例尺扩大,因为:
12:8=1.5:1
9:6=1.5:1
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