Question 5083
Set up a ratio in one of several different ways:

Let x = distance apart on the map


{{{ (map cm)/(real km) = (map cm)/(real km)}}}

{{{(2 cm)/(5 km) = (x cm)/(16 km)}}} 


Remember that {{{a/b= c/d}}} means that {{{ad= bc}}}.


In the same way:
{{{(2 cm)/(5 km) = (x cm)/(16 km)}}} means that  {{{2* 16 = 5*x}}} 


So, 
{{{5x = 32}}}
{{{ x= 32/5}}} cm.


R^2 at SCC