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一个底面直径是40cm的圆柱形璃杯装有一些水。水中放着一个底面直径是20cm，高是15cm的圆锥形
一个底面直径是40cm的圆柱形璃杯装有一些水。水中放着一个底面直径是20cm，高是15cm的圆锥形
2025-03-15 15:24:42
推荐回答（1个）
回答1：
直径40cm，半径=20cm；
直径20cm，半径10cm：
圆锥形铅锤的体积=(1/3)x(10x10xπx15)=500π(cm³)；
水面下降：500π/(20x20xπ)=5/4=1.25(cm)；
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