Please help I need to turn it in in five mins

Acylinder has volume 45π and radius 3. what is it’s height?

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?

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)