某建筑物窗户如图所示,它的上半部是半圆,下半部是矩形.制造窗框的材料总长为15m.当x等于多少时,窗户透过的光线最多,此时,窗户的面积是多少?(精确到0.01㎡)详细解答一下谢谢
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![某建筑物窗户如图所示,它的上半部是半圆,下半部是矩形.制造窗框的材料总长为15m.当x等于多少时,窗户透过的光线最多,此时,窗户的面积是多少?(精确到0.01㎡)详细解答一下谢谢](/uploads/image/z/10130259-3-9.jpg?t=%E6%9F%90%E5%BB%BA%E7%AD%91%E7%89%A9%E7%AA%97%E6%88%B7%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%AE%83%E7%9A%84%E4%B8%8A%E5%8D%8A%E9%83%A8%E6%98%AF%E5%8D%8A%E5%9C%86%2C%E4%B8%8B%E5%8D%8A%E9%83%A8%E6%98%AF%E7%9F%A9%E5%BD%A2.%E5%88%B6%E9%80%A0%E7%AA%97%E6%A1%86%E7%9A%84%E6%9D%90%E6%96%99%E6%80%BB%E9%95%BF%E4%B8%BA15m.%E5%BD%93x%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91%E6%97%B6%2C%E7%AA%97%E6%88%B7%E9%80%8F%E8%BF%87%E7%9A%84%E5%85%89%E7%BA%BF%E6%9C%80%E5%A4%9A%2C%E6%AD%A4%E6%97%B6%2C%E7%AA%97%E6%88%B7%E7%9A%84%E9%9D%A2%E7%A7%AF%E6%98%AF%E5%A4%9A%E5%B0%91%3F%EF%BC%88%E7%B2%BE%E7%A1%AE%E5%88%B00.01%E3%8E%A1%EF%BC%89%E8%AF%A6%E7%BB%86%E8%A7%A3%E7%AD%94%E4%B8%80%E4%B8%8B%E8%B0%A2%E8%B0%A2)
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