18.84÷3.14=6(厘米),
6÷2=3(厘米),
6×6-3.14×32,
=36-3.14×9,
=36-28.26,
=7.74(平方厘米).
答:被剪掉的纸屑的面积是7.74平方厘米.
从一张正方形纸上剪下一个周长是18.84厘米的最大圆,求被剪掉的纸屑的面积?
从一张正方形纸上剪下一个周长是18.84厘米的最大圆,求被剪掉的纸屑的面积?
数学人气:233 ℃时间:2019-11-14 05:05:31
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