Please help me. thanks !

2,001 cubic feet

Step-by-step explanation:

This is because the length is 29, and the width is 23, so you would multiply them together to get 667.  

29*23=667

Because it has to be at least 3 ft thick, we need to multiply 667 by three because there are 3 layers.  Then you would get 2,001 cubic feet

667*3= 2,001

5+8=13, and  13+8=21, 13+21=34

Step-by-step explanation:

fibonacci sequence...

1+1=2

1+2=3

2+3=5, etc...

sooo,

5+8=13, and  13+8=21, 13+21=34