Question 691412
The dimensions of a brick, in inches, are 2 by 4 by 8. How many such bricks are needed to have a total volume of exactly 1 cubic foot? 
Since they give you the dimensions of the brick in INCHES -- we begin by converting 1 cubic foot into cubic inches:
12*12*12 = 1728 cubic inches
.
You already found that the volume of a brick is 64 cubic inches
.
to find how many bricks are needed to make 1 cubic foot:
1728/64 = 27 bricks