打开App
360P
变径凿穿求表面积，难度较大
一段圆柱形钢材，底面直径8dm，高6dm，在它的上面正中间向下凿一个底面直径4dm，高2dm的小洞，接着在小洞的底面再向下凿一个底面直径2dm，高2dm的小洞 #六年级圆柱 和圆锥 #圆柱 表面积
人教版六年级数学30/30
App06:25
App08:55
App14:36
App08:44
App08:13
App09:18
App13:17
App06:51
App06:21
App03:42
App09:25
App05:49
App09:40
App12:36
App06:44
App08:36
App06:29
App02:36
App06:39
App07:37
App05:32
App06:17
App05:45
App06:20
App05:07
App05:41
App05:49
App04:51
App07:03
App11:46打开App观看
![惠东县气象台发布森林火险红色预警[I级/特别严重]](http://p3-sign.bdxiguaimg.com/tos-cn-p-0015/o80BXvIl7WRcACEqfOot7xABMQQ48B1MgfQyft~tplv-pk90l89vgd-fglass:864:486:90.jpeg?appId=32&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=101_middle_image&imageType=list&isImmersiveScene=0&is_stream=0&lk3s=9d3f5bff&logId=20241219131002358F7947157CA4AFC28E&requestFrom=101&x-expires=1766121002&x-signature=ek0%2Fa95BXcKtav7wSCPhSdCB40w%3D)
