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六上数学： 详细讲解圆面积的相关知识以及公式的多种推导方法。
六上数学+奥数26/95
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App05:08![六年级奥数：[方法提升]求它的整数部分是多少？](http://p26-sign.bdxiguaimg.com/tos-cn-i-0026/4b05afafe234403e8f382af447230548~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024111809242155613350D05A4920EFDB&requestFrom=704&version_code=80402&x-expires=1763429062&x-signature=XctvTWlQ6Iip7qH6uyksKNKIg10%3D)
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