Answer: 28 inchs
Step-by-step explanation: if it is y by 7 and your looking for the peremeter then you simply ignore that its a triple layes and do 7 times 4 which is 28 for the peremeter because a square has 4 equal sides hope this helps
Answer
28 Inches
Step-by-step explanation:
7+7+7+7=28
adding 7 four times because of the vertices of a square which is 4.