Cube Root of 1200

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What is the cube root of 1,200?

Answer

∛1,200 =
2∛150 ≈ 10.6266

Real cube root: the only number whose cube is 1,200.

≈ — rounded to 4 decimal places. 1,200 is not the cube of a rational number, so ∛1,200 is irrational: its decimal expansion never ends and never repeats.

Prime factors
1,200 = (2 × 2 × 2) × 2 × 3 × 5 × 5 = 2⁴ × 3 × 5²
Take out of the root
∛1,200 = ∛(2³ × 150) = 2∛150
Between cubes
10³ = 1,000 < 1,200 < 1,331 = 11³, so 10 < ∛1,200 < 11 and ∛1,200 ≈ 10.6266

See Also

FAQ

What is the cube root of 1,200?

∛1,200 = 2∛150 ≈ 10.6266

How to simplify ∛1,200?

Factor 1,200 into primes: 1,200 = 2 × 2 × 2 × 2 × 3 × 5 × 5. Each triple of equal factors is a cube and comes out of the root as one factor; the rest stays under it: ∛1,200 = ∛(2³ × 150) = 2∛150.

Is ∛1,200 a rational number?

No: 1,200 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 ∛1,200 is irrational; its decimal never ends and never repeats: ∛1,200 ≈ 10.6266.