My high-school friend Tom Ciborowski, an amazingly good P.E. who's in the Middle East these days building an artificial island, sent this to a bunch of us:
Today's quiz is on areas:
1. How many Nooks are there in a Bunder?
2. How many Dhurs are there in a Tsubo?
3. How many Carreaus are there in a Rood (not Rod)?
4. How many Cawneys are there in a Stang?
(Yes, there are answers to this. You can get the hard math at www.convertunits.com, but the explanation of what these are is to be found elsewhere.)