The question is a bit ambiguous. A square centimeter (cm²) is a unit of *area*, while a centimeter (cm) is a unit of *length*. You can't convert directly between them.
A square with an area of 1 cm² could have sides of 1 cm each. So, the *perimeter* would be 4 cm. But there's no single answer to how many cm are in 1 cm².