Use the prime factorization method for this.

Think of the times table.

Think of number whose square ends with 5.

Recall how to find perfect square by using ones digit.

Think of a number that multipliedÂ by itselfÂ gives 25.

Think of the number whose square will give you 3600.

Use the division method to find the square root of this number.

You can use prime factorisation method to find the square.

Think of times table in which you will see 9 at the units place.

Try to recall the formula for area of square.