Elementary school mathematics: When a glass of water is full, throw a stone and the water will overflow. If you throw a fish of the same weight, will the water overflow? Why?

The water is full, as long as you put something in it, it will overflow.

(2) If the water is not completely full, because the water put into the stone is just enough to overflow, then it depends on whether the fish is as big as the stone, as big or bigger, and it will definitely overflow; If it is smaller than the volume of the stone, it will not overflow ~ ~

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