Work Step by Step
Perimeter is the sum of the lengths of the sides. In a square, all 4 sides have the same length. $5y+5y+5y+5y$ $\longrightarrow$combine like terms $20y$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.