Cube Root of 1080

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What is the cube root of 1,080?

Answer

∛1,080 =
6∛5 ≈ 10.2599

Real cube root: the only number whose cube is 1,080.

≈ — rounded to 4 decimal places. 1,080 is not the cube of a rational number, so ∛1,080 is irrational: its decimal expansion never ends and never repeats.

Prime factors
1,080 = (2 × 2 × 2) × (3 × 3 × 3) × 5 = 2³ × 3³ × 5
Take out of the root
∛1,080 = ∛(2³ × 3³ × 5) = 2 × 3 × ∛5 = 6∛5
Between cubes
10³ = 1,000 < 1,080 < 1,331 = 11³, so 10 < ∛1,080 < 11 and ∛1,080 ≈ 10.2599

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FAQ

What is the cube root of 1,080?

∛1,080 = 6∛5 ≈ 10.2599

How to simplify ∛1,080?

Factor 1,080 into primes: 1,080 = 2 × 2 × 2 × 3 × 3 × 3 × 5. Each triple of equal factors is a cube and comes out of the root as one factor; the rest stays under it: ∛1,080 = ∛(2³ × 3³ × 5) = 6∛5.

Is ∛1,080 a rational number?

No: 1,080 is not the cube of a rational number, and the cube root of a fraction p/q in lowest terms is rational only when p and q are both cubes. So ∛1,080 is irrational; its decimal never ends and never repeats: ∛1,080 ≈ 10.2599.