What square root of 9 is less than 2 squared

3

The square root of 9=3*3. 2 squared = 2*2, which=4. Therefore, 3 is less than 4.

The square root of a number is = to a number squared.

Example: The square root of 25=5, or 5*5. Also, the number 5 squared = 5*5, which also is 25.