Find the volume of the right rectangular prism packed with 12 cubes. Each cube has an edge length of 1/2 inch.
Since each cube has an edge length of 1/2 inch, the volume of each cube is (1/2)^3 = 1/8 cubic inches.
There are 12 cubes packed inside the right rectangular prism, so the total volume of the prism is 12 * (1/8) = 12/8 = 1.5 cubic inches.
Therefore, the volume of the right rectangular prism packed with 12 cubes is 1.5 cubic inches.