最大的半圆的半径为6分米
则半圆面积:3.14×6²÷2=56.52平方分米
则剩下:12×6-56.52=15.48平方分米
从一块长12分米,宽6分米的铁片上剪下一个最大的半圆,余下的边角铁皮面积是多少平方分米?
从一块长12分米,宽6分米的铁片上剪下一个最大的半圆,余下的边角铁皮面积是多少平方分米?
数学人气:363 ℃时间:2019-08-20 23:45:34
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