The formula for density is:
Density= mass/ volume
Which means the formula for volume will be;
Volume= mass/ density
Which means the formula for volume will be
You were given the density as 13.54g/cm3 and the mass as 40gm. Just use them in the formula. That will be
Volume= 40/13.54
And that is 2.95 which is A. Hope I helped. Have a nice day
