√124 =
2√31
≈ 11.135529
Square root of 124 — 11.135529 (2√31)
Irrational
The square root of 124 is about 11.135529, or exactly 2√31. It lies between 11 and 12.
- As a decimal
- ≈ 11.135529
- Simplified surd
- √124 = 2√31
- Between
- 11 < √124 < 12
- Squared
- 124² = 15376
- Cube root
- ∛124 ≈ 4.986631
How the surd is simplified
Pull out the largest square factor. Since 50 = 25 × 2, the root of 25 comes out as 5 and the 2 stays behind: 5√2.
√124 = √(4 × 31) = 2√31
Nearby numbers
From 1 to 200
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200
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 124?
About 11.135529, or exactly 2√31.
Q. Can the surd be simplified?
Yes: 124 = 4 × 31, so 2 comes out and it becomes 2√31.
Q. Between which integers does it fall?
Between 11 and 12.
Q. What is the cube root of 124?
About 4.986631.