85问答库 > 一根长方体钢材，长4.8米，横截面是一个边长5cm的正方形。每立方分米钢重7.8千克，这根钢材重多

一根长方体钢材，长4.8米，横截面是一个边长5cm的正方形。每立方分米钢重7.8千克，这根钢材重多

2025-04-07 05:47:19
推荐回答（4个）
回答1：

回答2：

你好！
4.8米=48分米
5×5×48
=25×48
=1200立方分米
钢材重：1200×7.8=9360千克
如果对你有帮助望点右上角的采纳按钮

回答3：

解：
5cm=0.5分米
4.8米
=48分米
这根钢材重=0.5x0.5x48x7.8
=0.25x48x7.8
=12x7.8
=93.6千克

回答4：

你好！4.8米=48分米5×5×48=25×48=1200立方分米钢材重：1200×7.8=9360千克如果对你有帮助望点右上角的采纳按钮

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