perfect squares and square roots

 $\sqrt{324}$  

 $12^2$  

 $\sqrt{400}$  

Which of the following represents 4² ?

• 
• 
• 
• 

 $\sqrt{400}$  

• 20

• 100

• 4

• 3

Which of these areas is a perfect square?

• 12
• 90
• 40
• 64

What is the square root of 4?

• 9
• 4
• 2
• 10

(-13)² =

• -169

• 169

What is the square root of 361?

• 19

• 18

• 17

• 130.5

Which of the following represents 2²?

• 
• 
• 
•