The density of the block will be 20000 g/m³
Explanation
Given that, mass[tex](m)[/tex] of the block is 400 g and Volume[tex](V)[/tex] is 0.02 m³
Formula for Density is: [tex]D= \frac{m}{V}[/tex]
So, plugging the values of [tex]m=400[/tex] and [tex]V=0.02[/tex] into the above formula, we will get.....
[tex]D=\frac{400}{0.02}g/m^3\\ \\ D= 20000 g/m^3[/tex]
So, the density of the block will be 20000 g/m³