如图,正方形ABCD中,扇形ABC与扇形BCD的弧交于点E,BC=1cm,则图中阴影部分的面积为_______ cm².(结果保留π)
22-23九年级下·重庆丰都·阶段练习 查看更多[4]
重庆市丰都县平都中学校2022-2023学年九年级下学期3月月考数学试题重庆市第一中学校2022--2023学年九年级下学期期阶段性消化作业(八) 数学试题重庆市云阳县第一初级中学教育集团2022-2023学年九年级下学期期中数学试题(已下线)中考热点07 求阴影部分面积填空类(5题型+满分技巧+限时检测)-2024年中考数学【热点·重点·难点】专练(重庆专用)
更新时间:2023-03-25 20:41:06
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【推荐1】如图,△ABC是斜边AB的长为3的等腰直角三角形,在△ABC内作第1个内接正方形A1B1D1E1(D1、E1在AB上,A1、B1分别在AC、BC上),再在△A1B1C内接同样的方法作第2个内接正方形A2B2D2E2,…如此下去,操作n次,则第n个小正方形AnBnDnEn的边长是_____ .
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【推荐2】如图,
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【推荐1】如图,在△ABC中,∠A=50°,BC=6,以BC为直径的半圆O与AB、AC分别交于点D、E,则图中由O、D、E三点所围成的扇形面积(阴影部分)等于__ (结果保留π)
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