I'm reading a blood viscosity related theory and I have an example formula which I don't understand. It turns lt (fluid liters) or $cm^3$ into $cm^2$ and comes out with a number. I don't understand how the conversion is made from area to volume and vice-versa.
My formula is: $Q = S * v$
$S = 2,5 cm$
$Q = 5L*min^{-1}$
$v = ?$
So my simlpe equation is: ${\bf (5 cm^3*min^{-1}) = 2,5 cm * v}$
In my (friend's) notes I see the following fraction: $\frac{\frac{5*10^{-3}}{60}}{2,5*10^{-4}}$
NowI don't understand how the $5cm^3$ got turned into $\frac{5*10^{-3}}{60}$ and why the 2,5 must be multiplied with $10^{-4}$.
It's like converting the two units at once to match each other, but I'm missing something... the math between :-) (if there's any).
Thanks