Which tools would be necessary to determine whether or not a large regular block will float, without using water?

Explanation:

To determine if the bock will float you need:

The block has 3 dimmentions: lenght, wide and height, its volume is:

Once calculated it and measured the  weight, you calculate the density:

If the density of the block is smaller than the density of water (arroung 1000 kg/m3) the block will float.

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