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Sophie [7]
3 years ago
7

Does anyone understand this?

Mathematics
2 answers:
Sedbober [7]3 years ago
8 0
The perimeter is simply the sum of all side lengths.

p=a+a+a-1+a-1

p=4a-2
a_sh-v [17]3 years ago
6 0
A-1+a-1+a+a or a-2+a2
the answer is a

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