Answer:
[tex]A=225cm[/tex]
Step-by-step explanation:
From the question we are told that:
Sides of the square post
[tex]L=15cm[/tex]
Generally the equation for Area of a square A is mathematically given by
[tex]A=L*B[/tex]
Where L=B
Therefore
[tex]A=15*15[/tex]
[tex]A=225cm[/tex]
