Provide your best answer for the following math problem. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The problem is: what is the diagonal of a square field whose perimeter is 24 m ?
6 √ 2 m']
√(2 * 24²) = 12√2 ≈ 16.97 m.