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The volume of the cube of unknown substance is
. The length of one side of the cube is 9 cm
<u>Explanation:</u>
As per the formula of mass and density, Mass / Density equals to volume. Therefore as the mass of the cube was given to be 81 g and the density of the cube is known to be 3.0 g/
,, to help Bill find out the volume. It is the ratio of mass and density and can be calculated as

As it is a cube, the volume is product of length, breadth, and height. Here, all sides are same as it is the cube.



Answer:
A. The Cell Wall
Explanation:
The cell wall holds and supports the shape of the cell.