Comment Re:an example where algebra is useful? (Score 4, Informative) 158
Still it's not as bad as measuring rainfall in liters per square meter like we do here in Spain.
I'm wondering, what exactly is the problem with that unit? Which alternative would you prefer?
Because if it's mm that you prefer, you're maybe interested to know that liter per square meter is exactly the same as mm:
liter / m^2 = dm^3 / m^2 = (10^-1 m)^3 / m^2 = 10^-3 m^3 / m^2 = 10^-3 m = mm