# Question #185b5

##### 1 Answer

Jan 30, 2015

Well, the formula you've used for density is wrong. Density equals mass **divided** by volume, not multiplied like you show in the question.

I assume the three dimensions of the box (it's acutally a reactangular prism, to be precise) are expressed in **mm**. Indeed the volume of this box is

This means that the mass of the part is

If you want the answer rounded to two sig figs, the mass is