# How do you calculate the mass of a rectangular solid that has a density of 3.14 g/cm^3 and measures 2.50 cm by 1.30 cm by 3.00 cm?

May 9, 2017

I got: $m = 30.61 g$

#### Explanation:

The volume will be:

$V = 2.50 \times 1.30 \times 3.00 = 9.75 c {m}^{3}$

We know that:

$\text{density"="mass"/"volume}$

so in your case:

$3.14 = \frac{m}{9.75}$

rearranging:

$m = 3.14 \cdot 9.75 = 30.61 g$