Question 340287
the depth of box = 8inches = 3/4 feet.
the depth of sand = 3/4 of the depth of box
=3/4*3/4 
=9/16 feet
..
volume of sand = L*W*(H of sand)
V= 3*4*9/16
V=27/4 cu.ft
V=6.75 cu.ft