Calculate the mass of 12.0 cm sphere of lead metal?

Question

I don't understand how to solve it! Explain please!

Answer 1

density = mass/volume, mass = density*volume

density of lead = 11.34 g/cm^3

volume of the sphere is 4/3*pi*r^3.... i take it you mean 12.0cm to mean the raduis of the sphere, in that case, the volume is

4/3*pi*12^3 = 7241.1429cm^3

mass = 11.34 g/cm^3 * 7241.1429cm^3 = 82114.56g = 82.11456kg =

82114.56*2.2 = 180652.032pounds

Answer 2

Density of the material is required to answer this!!