Given that
There is a number and we have to round it using the single digit and in powers of 10.
Explanation -
Whenever we convert a decimal number into powers of 10.
The power of 10 is always equal to the negative number of digits after the decimal.
Then, the number 0.00000572 can be written as0

Now we have to round off it to a single digit.
Then,

Final answer -
Therefore the final answer is 6 x 10^(-6)