An artist creates a cone-shaped sculpture for an art exhibit. if the sculpture is 5 feet tall and has total volume 109.9 cubic feet, what is the radius of the sculpture? use 3.14 for pie

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).