The density of lead is 11.34 g/cm3 and the density of aluminum is 2.69 g/cm3. Find the radius of lead and aluminum spheres each having a mass of 70 kg. (Round your answers to two decimal places.)

Answer 1

ρV = m density*volume = mass and for a sphere:

ρ(4/3)πr³=m Solve for r

r - (3m/(4πρ))^1/3

adjust 70 kg to 70000 grams and the units will mesh.