No.  It's just 1 way out of 36 or   Here's why:

Only one sixth of the time will the first cube land on 5'.

Now only one sixth of those times that the first cube lands on 5',
will the second cube land on 4'.

So the answer verbally is "one sixth of one sixth of the time".

So numerically the answer is  or .

Look at it this way.  In the chart below each (↏,↏) represents 
(1st roll, 2nd roll):

(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)

(2,1) (2,2) (2,3) (2,4) (2,5) (2,6) 

(3,1) (3,2) (3,3) (3,4) (3,5) (3,6) 

(4,1) (4,2) (4,3) (4,4) (4,5) (4,6) 

(5,1) (5,2) (5,3) (5,4) (5,5) (5,6) 

(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)

Out of those 36 ways, only the red one has 5' first and 4' second.  
 

Edwin