he base of a solid in the xy-plane is the circle x^2 + y^2 = 16. Cross sections of the solid perpendicular to the y-axis are semicircles. What is the volume, in cubic units, of the solid?

Answer 1

circles stacked to make hemisphere of radius 4

Volume = (1/2) (4/3) pi r^3
= (2/3) pi (4^3)

Answer 2

ayight