Find the volume of the sphere of 28m and round your answer to the nearest tenth

Pranza plotted point a in the coordinate plane below.

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

Which statement accurately explains whether a reflection over the y axis and a 270° counterclockwise rotation would map figure acb onto itself?