The solid cut into the sphere z 2 + r 2 = 16 by the cylinder r = 4 cos . Obtain the volume of

The solid cut into the sphere z² + r² = 16 by the cylinder r = 4 cos θ. Obtain the volume of the solid. 

El slido cortado en la esfera z + r = 16 por el cilindro r = 4 cos 0.