Geometry · Area, Surface Area & Volume
Volume of a Sphere
HSG-GMD.A.3
Definition
V = four thirds pi r cubed, depending only on the radius.
Examples
- Four thirds pi (3 cubed) = 36 pi cubic units.
- A sphere with radius 6 has volume four thirds pi(6 cubed) = 288 pi cubic units.
Key rule
A sphere's volume depends only on its radius, cubed.
Memory hook
Four-thirds pi r cubed.