If the radius of a sphere is cut in half, how will the volume of the original sphere and the new sphere compare?

The volumes will be in the ratio of the cubes of their radii.

Say the radius of the original sphere is 2 and the radius of the new sphere is 1 then the ratio of their volumes will be  2^3 to 1^3

= 8 : 1.

The new sphere will have a volume of 1/8 of the original.

answer:

c) the x-coordinate of the center of the circle increases by 3