$\sqrt{484}$  

(a)  

 $\sqrt{2,253}$  

(a)  

 $\sqrt{836}$  

(a)  

 $\sqrt{7,988}$  

(a)  

 $\sqrt{3,025}$  

(a)  

 $\sqrt{6,084}$  

(a)  

 $\sqrt{1,849}$  

(a)  

 $\sqrt{9,801}$  

(a)  

 $\sqrt{3,481}$  

(a)