A square iron block with a side length of six decimeters is melted into a rectangular iron block with a bottom surface of 12 decimeter. How high is this rectangular iron block?

According to the cuboid volume formula, the cuboid volume is 6*6*6=2 16 cubic decimeter, and the cuboid volume remains unchanged before and after melting. According to the cuboid volume formula, it can be deduced that the cuboid height is h = v/s = 216/12 =18 decimeter.

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