篮球场和足球场有许多圆形和半圆形,它们分别是什么区域,和足球场篮球场的周长,面积 在篮球场足球场上,有许多圆形和半圆形。他们是什么区域?周长和...
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通用足球场:中间圆“中圈弧”,禁区半圆“罚球弧”,周长346米,面积7140平米。
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