Find the least number that must be added to $1300$ to get a perfect square. Also, find the square root of this perfect square.

Find the square root of $4489$ by long division method.

Find the square root of $7921$ by long division method.

Find the square root of $5776$ by long division method.

Find the square root of $1369$ by long division method.

Find the square root of $3249$ by long division method.

Find the number of digits in the square root of $120409$ (without any calculation).

Find the number of digits in the square root of $6525$ (without any calculation).

Find the number of digits in the square root of $1471369$ (without any calculation).