Math Is Fun Forum

Help me, Obi-Math-Kinobi.. you're my only hope...

I was hoping that you good folk could help me with a conundrum.

I have a roll of corrugated cardboard, used for construction.  It's used by taping it down over the floor during construction to help protect the floor from scratches and dirt.  I bought an unknown  quantity of it and am trying to figure out how much I have...

The cardboard itself is exactly 1/8 inch thick.  The diameter of the roll is 18 inches.  There is a core of 2 inches.  The width of the cardboard roll is 30 inches.

I'm trying to figure out:

1. How long the roll is.
2. What is the total square footage of the cardboard in the roll.

Any help will be greatly appreciated.  Unfortunately, I am not a math guru and will be happy to nod at your explanation of formulae and functions, but honestly, I'll probably have no clue how you worked your magic.

Thank you in advance!

Ron