Square roots·√87
√87 =
√87
≈ 9.327379

Square root of 87 — 9.327379 (√87)

Irrational

The square root of 87 is about 9.327379, or exactly √87. It lies between 9 and 10.

As a decimal
≈ 9.327379
Simplified surd
√87 = √87
Between
9 < √87 < 10
Squared
87² = 7569
Cube root
∛87 ≈ 4.431048

Nearby numbers

√84 = 2√21√85 = √85√86 = √86√88 = 2√22√89 = √89√90 = 3√10

From 1 to 200

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How to read this

  • The decimal is rounded; the surd form is the exact value.
  • Pulling out a square factor simplifies the surd — √50 = 5√2.
  • If the number is not a perfect square, the decimal never ends (irrational).
  • Knowing which two integers it sits between is enough to estimate in your head.

Frequently asked questions

Q. What is the square root of 87?

About 9.327379, or exactly √87.

Q. Can the surd be simplified?

No — there is no square factor to pull out.

Q. Between which integers does it fall?

Between 9 and 10.

Q. What is the cube root of 87?

About 4.431048.