1² =

(a)  

2² =

(a)  

3² =

(a)  

4² =

(a)  

5² =

(a)  

6² =

(a)  

7² =

(a)  

8² =

(a)  

9² =

(a)  

 $\sqrt{0}$  =

(a)  

 $\sqrt{1}$  =

(a)  

 $\sqrt{4}$  =

(a)  

 $\sqrt{9}$  =

(a)  

 $\sqrt{16}$  =

(a)  

 $\sqrt{25}$  =

(a)  

 $\sqrt{36}$  =

(a)  

 $\sqrt{49}$  =

(a)  

 $\sqrt{64}$  =

(a)  

 $\sqrt{81}$  =

(a)