Cube of 11
11 cubed equals 1331. Cubes show up in volume calculations — a cube with side 11 holds 1331 cubic units.
Cubes carry the fingerprint of their base. The final digit of 1331 is 1 — always the cube of the base's own final digit. Divided by 9, a cube only ever leaves 0, 1 or 8, and 1331 leaves 8. The volume picture explains the name: a 11 × 11 floor of unit cubes holds 121 of them, and 11 such layers stack to 1331 — the shape itself is the exponent at work. The gaps grow like a parabola: 1331 − 1000 = 331, which is 3 × 11 × 10 + 1 — each new layer wider than the last. Odd base, odd cube: 1331 stays odd, as 11 is.
| Expression | Value |
|---|---|
| 11³ | 1331 |
Frequently asked questions
What is 11 cubed?
11 cubed is 1331, because 11 × 11 × 11 = 1331. The exponent 3 gives it the name "cube".
Why is it called a cube number?
Because it matches volume: a cube with side length 11 contains exactly 1331 unit cubes.
Is 1331 a perfect cube?
Yes — 1331 = 11³, so it is a perfect cube by definition.