哥哥姐姐们帮忙!急的很!如图(1)(2),某餐桌桌面可由圆形折叠成正方形(图中阴影表示可折叠部分).已知折叠前圆形桌面的直径为a m,折叠成正方形后边长为b m.如果一块正方形桌布的边

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/18 22:21:44
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