Answer to Question #173018 in Physics for Louis

Question

A cube made of lead measures 3 cm on each side and a mass of 310.50 grams. What is its density in g / cm3?

a. 10.35 g/cm3 b. 11.50 g/cm3 c. 34.5 g/cm3 d. 103.5 g/cm3 

Answer 1

The density is mass divided by volume:

$$\rho=\frac mV=\frac{m}{a^3}=\frac{310.50}{3^3}=34.5\text{ g/cm}^3.$$