What's the surface area and volume for a cube that's 4 cm on each side

I need to know how you figure this out too, it was a review question for my test and I dont understand how you figure these out. thanks :)

Surface Area:
L=Length W=Width H=Height
LxWx2
WxHx2
LxHx2
Add Together

4x4=16x2=32
4x4=16x2=32
4x4=16x2=32
32+32+32= 96 cm²

Volume:
L= Length W=Width H=Height
LxWxH

4x4=16x4=64 cm³

V = 4x4x4 = 64 cm^3

S = 4x4x6 = 96 cm^2