What is a cube root?

R-54 What do we know about square root?
2D
area
x²

A=l x w

√9=3

√=side length

What is a cube root? 

3D

A=l x w x h

Larger area/perimeter

Volume??

A= X x X x X

x=side length (outside of a 2D shape)

Inside of a cube is called volume. 

Cube with:

h=4

w=4

l=4

volume of 64. 

Show us on the cube where the 4 would go and the 64 would go? 

The class thinks that in a cube all the sides have to be the same. 

What are we going to call this? 

dimensions or x

What is the cube root of something equal to? 

³√= 

Should we call it volume, area, dimensions? 

Class determined: Dimensions

(outside of a 3D shape)

³√= 64 (volume)-inside

How are volume and area different? 

volume has a H x W x L

Can you draw a 3D shape with a volume of 27? What are the dimensions?
3³ or 3 x 3 x 3 
³√=27



³√125=5  What does the 125 mean in this math expression?
-The volume of the cube

What does the 5 mean?
-the dimensions of the cube

³√64=8
8=Side length of the square
64=area of a sqaure


Only a square has all the sides the same

HW: L57- pg. 32 # 50-5, 56-58, 60-64

Quiz Tomorrow!