actually, I was told that norway's coastline was longer than the US's, so I went with a cartographers tools, and started measuring with a measuring tape and a ruler (on a 1:500 mi scale map).
It took a week, and I made a couple of screwups (I was only 10), but I managed to indeed discover that they do have a long coastline. longer than the US's? I wasn't able to tell, as I keeled over and fell asleep, before I could satrt the US's coast.
I also measured Denmark and Sweden's coatline, because I was up for hours on end without sleep.

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