1. Measure the space before building your shelves. This project is for a garage shelf unit measuring 8 feet tall, 8 feet wide and 27 inches deep. It assumes that the garage has a
http://www.ehow.com/how_8520513_build2x4shelving...

If the question refers to 2" x 4" then there are 2 x 4 = 8 sq in. If the question refers to 2' x 4' (i.e. the lengths are in feet) then there are : 2 x 12 x 4 x 12 = 1152
http://wiki.answers.com/Q/How_many_square_inches_i...

Sorry about the delay ... If a 2x4 were really 2" by 4": If it is 8 feet wide, then since 8*12 = 96, it is 96 inches wide. If a 2x4 we really 2" by 4", and they
http://en.allexperts.com/q/Algebra2061/2013/10/nu...

There are things that have to be taken into account such as the
http://www.chacha.com/question/howmanypoundsof...
