Question

why does it take more cubes with 1 3 unit side lengths to fill the prism than it does with cubes with 1 2 unit side lengths

Answer 1

Below.

Explanation:

1x3 side lengths consists of 3 cubes. 1 by 2 side length consists of 2 cubes. 3 >2

Answer 2

It takes 135 of the 1/3 unit cubes to fill the prism. How many cubes with 1/3 unit side lengths can fit in a cube with 1-unit side lengths? There are 27 cubes with 1/3 unit side lengths in 1 cubic unit