They are opposites of each other.
-13.2 + 8.1 = -5.1
13.2 - 8.1 = 5.1
Answer:

Step-by-step explanation:

Hope this helped!
<h2>~AnonymousHelper1807</h2>
Answer:
I am pretty sure that the answer is 18+2n
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Answer:
d
Step-by-step explanation:
when cut you can see that the cutout will be a square
the base is a square and the cut is parallel to the base
therefore the cutout will be a square