Answer:
40cm
Explanation:
A square has 4 equal sides, therefore:
[tex]\begin{gathered} \text{Perimeter}=4s \\ s=\text{side length} \end{gathered}[/tex]Given a 10cm square tile:
[tex]\begin{gathered} \text{Perimeter}=4\times10 \\ =40\operatorname{cm} \end{gathered}[/tex]The perimeter of a 10cm square tile is 40cm.
