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This is the correct solution if I am not mistaken :)
Answer:
The perimeter is 14 units
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Step-by-step explanation:
Given




Required
Determine the perimeter
To do this, we simply calculate the distance between the sides of the rectangle i.e. AB, BC, CD and DA.
Distance (d) is calculated using:

For AB
--- 
--- 

For BC
--- 
--- 

For CD
--- 
--- 

For DA
--- 
--- 

So, the perimeter (P) is:



<em>The perimeter is 14 units</em>
Answer:
1 & 4 are proportional to each other, if that helps at all!
Step-by-step explanation: