Answer:
605/12 ft by 121/12 ft
Step-by-step explanation:
So, the dimensions of the dog run would be 5x as the length and x as the width.
The perimeter of this dog run would therefore be :
5x + 5x + x + x = 12x
From here, we know that 12x = 121 ft, so x = 121/12 ft
so the final dimensions of the dog run would be 605/12 ft by 121/12 ft
