Thank you for your products on Surface Area - I am in the middle of that unit right now - so theses are helping me quite a bit.
Two things on accuracy of your products:
On the Surface Area of a Triangular Prism - on the second set of practice problems - question 2 - the height of the polyhedron prints as 45 - not 4.5 - causing the students to calculate a different answer than the one on your answer key. I looked at the original page - and the decimal point gets covered by the 5 when printing.
Two: On the Surface Area of Cylinders in terms of Pi (which I loved Thank you!) In the example - at the top - the third line - the first term should be 2(pi)36 - not 12(pi)36
Thought you might like to know! Have a great day.