SOLUTION: The mass of a spherical shell having an outside radius of r2 and an inside radius r1 is
mass=4/3 πr 3/2 D-4/3 πr 3/1 D
where D is the mass density of the material.
Question 1098415: The mass of a spherical shell having an outside radius of r2 and an inside radius r1 is
mass=4/3 πr 3/2 D-4/3 πr 3/1 D
where D is the mass density of the material. Factor the right side of this equation.