Cube of 6
6 cubed equals 216. Cubes show up in volume calculations — a cube with side 6 holds 216 cubic units.
Cubes carry the fingerprint of their base. The final digit of 216 is 6 — always the cube of the base's own final digit. Divided by 9, a cube only ever leaves 0, 1 or 8, and 216 leaves 0. The volume picture explains the name: a 6 × 6 floor of unit cubes holds 36 of them, and 6 such layers stack to 216 — the shape itself is the exponent at work. The gaps grow like a parabola: 216 − 125 = 91, which is 3 × 6 × 5 + 1 — each new layer wider than the last. Even base, even cube: 216 keeps the parity of 6.
| Expression | Value |
|---|---|
| 6³ | 216 |
Frequently asked questions
What is 6 cubed?
6 cubed is 216, because 6 × 6 × 6 = 216. The exponent 3 gives it the name "cube".
Why is it called a cube number?
Because it matches volume: a cube with side length 6 contains exactly 216 unit cubes.
Is 216 a perfect cube?
Yes — 216 = 6³, so it is a perfect cube by definition.