21.公园里有一个圆形花坛,量的外直径是20.5米,花坛的外墙厚25厘米,(如图),这+
2025-02-10 00:08:50 2025-02-10 00:08:50 2025-02-10 00:08:50 2025-02-10 00:08:50 2025-02-10 00:08:50 2025-02-10 00:08:50美术小组画出了学校的平面图如图1量一量算一算办公楼距教学楼有______米2实验楼在教学楼
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