Please help me with my math​

1. 11

2. 5.65685...~ 5.7

3. 4.2426...~ 4.2

4. .75

Step-by-step explanation:

1.) 11*11=121

2.) 5*5=25, 6*6=36

So the answer is between 5 and 6. It is closer to 6^2 than 5^2. I used a calculator to figure out the exact answer.

3.) 54/3=18, 4^2=16, 5^2=25

It is closer to 4^2 than 5^2. about 2/9 off (between the two answers). 4.242...

4.) 9/16= .5625. √.5625= .75

Hope this helps:) Have a good day!