Small cubes with edge limits of .25 inch will be packed into the cube rectangular prism below (4.5 x 5 x 3.75) How many .25 cubes will be needed to completely fill the box

Volume of one cube = (.25in)^3 = .015625 in^3

Volume of prism = ( 4.5 * 5 * 3.75 ) = 84.375 in^3

So to completely fill the box we have :

84.375 / .015625 = 5400 cubes

5400