A thief plans to steal a gold sphere with a radius of 28.5 cm from a museum. if the gold has a density of 19.3 g/cm3, what is the mass of the sphere in pounds? [the volume of a sphere is v = (4/3) Ïr3.]

Radius of gold sphere radius r=28.5

The volume of the sphere is = 4/3*3.14*r*r*r.

=1.01*10^5 cm^3.

The density of gold is 19.3 g/cm^3.

The relation between the density, volume, and mass

Density=Mass/Volume.

1.95*10^6 g=Mass

1.95*10^6 g * 0.0022 pounds

4.29*10^3 pounds.

Hence mass of the sphere is 4.29*10^3 pounds.