Suppose a sphere, cylinder, and cone all share the same radius. The cylinder and cone also share the same height, which is twice the radius. Which of the following is true about the relationship between the volume formulas for the sphere cylinder and cone.

The volume formulas for the sphere, cylinder, and cone are as follows:

- Sphere: V = (4/3)πr^3
- Cylinder: V = πr^2h = πr^2(2r) = 2πr^3
- Cone: V = (1/3)πr^2h = (1/3)πr^2(2r) = (2/3)πr^3

Therefore, the relationship between the volume formulas for the sphere, cylinder, and cone is as follows:
V_sphere : V_cylinder : V_cone = (4/3)πr^3 : 2πr^3 : (2/3)πr^3 = 4 : 6 : 2

Hence, the relationship between the volume formulas for the sphere, cylinder, and cone is 4:6:2.