The mass of the cube with length of 2cm is [tex]320g[/tex]
- We were given length of cube as [tex]2cm[/tex]
To know the volume of cube we can use the expression
Volume of cube = [tex]a^{3}[/tex]
Where a= length of cube=[tex]2cm[/tex]
Then volume of the cube [tex]2^{3} = 8 cm.[/tex]
- Density was given as [tex]( \frac{40g}{ cm^{3} } )[/tex]
But we know that density is the ratio of mass to the volume of a substance.
- Then[tex]Density= \frac{ mass }{ volume }[/tex]
But we are looking for mass of the object, the we can make Mass as subject of the formula
- [tex]Mass= density * volume[/tex]
Them substitute the values
- [tex]Mass = (40 * 8)[/tex]
[tex]= 320g[/tex]
Therefore mass of the cube is [tex]320g[/tex]
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