Source google image: https://sites.google.com/a/mammothusd.org/wisner/_/rsrc/1472770496740/volume-of-prisms-puzzle-time/9.4%20Puzzle%20Time.png
Puzzle time
Source google image: https://sites.google.com/a/mammothusd.org/wisner/_/rsrc/1472770496740/volume-of-prisms-puzzle-time/9.4%20Puzzle%20Time.png