A copper ball contains 178g of copper. If the total volume of the ball is 40 cubic centimeters, what is the hollow volume of the ball To process, urgent!

A copper ball contains 178g of copper. If the total volume of the ball is 40 cubic centimeters, what is the hollow volume of the ball To process, urgent!

V = m / ρ = 178 / 8.9 = 20 cc
Hollow volume = 40-20 = 20 cc