Density can be calculated using the following rule: density = mass/volume plug the given mass and volume into the equation to calculate thr density: density=57/4.2 = 13.57 g/cm^3
Its Mass divided by Volume. 57/4.2= 13.5g/cm3 if you have to round it, .5 and under :Leave it .6 and up: round it up 1. so in this case, leave it at 13. Hope this helps