Answer:
A=a^2, so A=4^2=16 , or 4*4=16
Explanation:
All sides of a square are equal, so the length of the sides are all 4. Put 4 in for a in the formula A=a^2 or Area = side length squared.
A = 4^2
A = 4 * 4
A = 16
I counted 32 squares in and out
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