A buoy is constructed out of the bottom half of a sphere with a
cone on top. The radius of the sphere and the radius of the cone
is 3 ft. The height of the buoy is 7ft.
What is the volume of the buoy?
Enter your answer, in exact form, in the box.
![A buoy is constructed out of the bottom half of a sphere with a cone on top The radius of the sphere and the radius of the cone is 3 ft The height of the buoy i class=](https://us-static.z-dn.net/files/d91/c0b92543455c11797407008e02880fca.png)