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OverLord2011 [107]
2 years ago
5

How to answer this question ?​

Mathematics
1 answer:
drek231 [11]2 years ago
6 0

The sides

12-3a

12-3a

4(2a-5)=8a-40

so for perimeter we + them

(12-3a)+(12-3a)+(8a-40)

=

2a-16

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