Answer:
The rectangular garage is 13m long.
Explanation:

- Perimeter of rectangular garage = 
  
- Width of the rectangular garage = 
  

- How long is the garage (length of garage).

 As we know that,
As we know that,
Perimeter of rectangle = 

So, by putting the value of perimeter and width in this formula we get,
 
 
 

 
 
 

 
 
 

 
 
 

 
 
 

 
 

Therefore, length of the rectangular garage = 

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Hope it helps you:)