Answer:
The length of the rectangular prism is [tex]16\ in[/tex]
Step-by-step explanation:
step 1
Find the volume of the 64 1-inch cubic blocks
The volume of one cubic block is
[tex]V=(1)^{3}=1\ in^{3}[/tex]
so
the volume of 64 cubic blocks is
[tex]V=64(1)=64\ in^{3}[/tex]
step 2
Find the length of the rectangular prism
The volume of the rectangular prism is equal to
[tex]V=LWH[/tex]
we have
[tex]V=64\ in^{3}[/tex]
[tex]W=2\ in[/tex]
[tex]H=2\ in[/tex]
substitute and solve for L
[tex]64=L(2)(2)[/tex]
[tex]64=4L[/tex]
[tex]L=64/4=16\ in[/tex]