请大家帮我看看这几题怎么做3Q把一段圆柱体木料通过底面直径沿高切成体积相等的两块,它的切面是一个面积为64cm²的正方形.切之前木料的体积是多少?有一个圆锥形沙堆,底面半径是2M,8M,
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![请大家帮我看看这几题怎么做3Q把一段圆柱体木料通过底面直径沿高切成体积相等的两块,它的切面是一个面积为64cm²的正方形.切之前木料的体积是多少?有一个圆锥形沙堆,底面半径是2M,8M,](/uploads/image/z/5276178-18-8.jpg?t=%E8%AF%B7%E5%A4%A7%E5%AE%B6%E5%B8%AE%E6%88%91%E7%9C%8B%E7%9C%8B%E8%BF%99%E5%87%A0%E9%A2%98%E6%80%8E%E4%B9%88%E5%81%9A3Q%E6%8A%8A%E4%B8%80%E6%AE%B5%E5%9C%86%E6%9F%B1%E4%BD%93%E6%9C%A8%E6%96%99%E9%80%9A%E8%BF%87%E5%BA%95%E9%9D%A2%E7%9B%B4%E5%BE%84%E6%B2%BF%E9%AB%98%E5%88%87%E6%88%90%E4%BD%93%E7%A7%AF%E7%9B%B8%E7%AD%89%E7%9A%84%E4%B8%A4%E5%9D%97%2C%E5%AE%83%E7%9A%84%E5%88%87%E9%9D%A2%E6%98%AF%E4%B8%80%E4%B8%AA%E9%9D%A2%E7%A7%AF%E4%B8%BA64cm%26%23178%3B%E7%9A%84%E6%AD%A3%E6%96%B9%E5%BD%A2.%E5%88%87%E4%B9%8B%E5%89%8D%E6%9C%A8%E6%96%99%E7%9A%84%E4%BD%93%E7%A7%AF%E6%98%AF%E5%A4%9A%E5%B0%91%3F%E6%9C%89%E4%B8%80%E4%B8%AA%E5%9C%86%E9%94%A5%E5%BD%A2%E6%B2%99%E5%A0%86%2C%E5%BA%95%E9%9D%A2%E5%8D%8A%E5%BE%84%E6%98%AF2M%2C8M%2C)
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