18. the volume and surface area of a sphere with great circle area 36pi in2
20. A sphere has radius 4. If the radius is multiplied by 5, describe what happens to the surface area.
5. a cube with edge length 22 ft
6. a regular hexagonal prism with edge length 10 ft and height 10 ft
7. a cylinder with diameter 16 in. and height 7 in.