Find the number of digits in the square root of the following number ( without any calculation)

$3915380329$

Find the number of digits in the square root of the following number ( without any calculation)

$152399025$

Find the square root of $729$ by long division method.

Find the square root of $6561$ by long division method.

Find the square root of $3481$.

Find the square root of $9216$ by long division method.