数学知识问答有2个圆挨在一起,一个大一个小,大圆的半径为4cm,小圆半径为1cm,求用一个矩形将这两个圆照住,才能使它的面积最小?最好带理由
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![数学知识问答有2个圆挨在一起,一个大一个小,大圆的半径为4cm,小圆半径为1cm,求用一个矩形将这两个圆照住,才能使它的面积最小?最好带理由](/uploads/image/z/1737353-65-3.jpg?t=%E6%95%B0%E5%AD%A6%E7%9F%A5%E8%AF%86%E9%97%AE%E7%AD%94%E6%9C%892%E4%B8%AA%E5%9C%86%E6%8C%A8%E5%9C%A8%E4%B8%80%E8%B5%B7%2C%E4%B8%80%E4%B8%AA%E5%A4%A7%E4%B8%80%E4%B8%AA%E5%B0%8F%2C%E5%A4%A7%E5%9C%86%E7%9A%84%E5%8D%8A%E5%BE%84%E4%B8%BA4cm%2C%E5%B0%8F%E5%9C%86%E5%8D%8A%E5%BE%84%E4%B8%BA1cm%2C%E6%B1%82%E7%94%A8%E4%B8%80%E4%B8%AA%E7%9F%A9%E5%BD%A2%E5%B0%86%E8%BF%99%E4%B8%A4%E4%B8%AA%E5%9C%86%E7%85%A7%E4%BD%8F%2C%E6%89%8D%E8%83%BD%E4%BD%BF%E5%AE%83%E7%9A%84%E9%9D%A2%E7%A7%AF%E6%9C%80%E5%B0%8F%3F%E6%9C%80%E5%A5%BD%E5%B8%A6%E7%90%86%E7%94%B1)
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