类型mismsatch不能从浮点到布尔

I am very new in Java and having what I'm sure is a logic problem with this program. The idea is to create a program that loops and provides the area of a circle and the volume of a sphere. I can get the area and the volume, but I can't seem to make the program loop. When I try w/ boolean values it tells me to convert to float and vice versa. Can anyone help point me in the right direction? Thank you!I am very new in Java and having what I'm sure