src/Number.php
public function sqrt()
    {
        if ($this->value === null) {
            return new FloatType($this->value);
        }

        return new FloatType(sqrt($this->value));
    }
public function sqrt()
    {
        if ($this->value === null) {
            return new FloatType($this->value);
        }

        return new FloatType(sqrt($this->value));
    }
Square root. Product is always FloatType.

@return FloatType