Squares and Cubes

 $\sqrt{16}=?$  

• 8

• 2

• 4

• 32

 $9^2=18$  True or false?

• True

• False

 $3_{\sqrt{8}}$    (cube root of 8) 

• 2

•  $\pm2$  

• -2

• None of the above 

The area of a square painting is 81  $cm^2$  . What is the length of one side?

• 9

• -9

• 40.5

• -40.5

A cube with side length s has a volume of 64 cubic units. What is the length of one side?

• 4

• 8

• 16

• 32

Select the set with all perfect squares.

• -144, 9, 50, 75, 81, 100

• 9, 50, 81, 100

• 9, 50, 75, 81, 100

• 9, 81, 100

√ 4

• 2
• 7
• 16
• 1

√ 64

• 4
• 6
• 9
• 8

√ 81

• 8
• 7
• 10
• 9

5²

• 16
• 25
• 20
• 10