Question

21 is
perfect square​

Answer 1

Answer:

21 is not a perfect square.

Step-by-step explanation:

Here, the square root of 21 is about 4.583. Thus, the square root of 21 is not an integer, and therefore 21 is not a square number.

I HOPE THIS WILL HELP U..

Answer 2

Answer:

21 is not a perfect square.