Answer:
12.6
Explanation:
The perimeter of a square is simply the length of one side multiplied by 4
So if we divide the perimeter by 4 we'll get the length of one side
50.4 / 4 = 12.6
Answer: Y = 12.6
Step-by-step explanation: 50.4 / 4 = y, Y = 12.6
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