The area of a square is calculated as length * width.

Because all a square has all sides equal then we can say that given a side S, the area is S*S

For square A of sides A, the area is A*A=25 or A^2=25

Solving for A we know that A=<<5=5>>5

For square B of sides B, the area is B*B=81 or B^2=81

Solving for B we know that B=<<9=9>>9

The side difference between A and B is 9-5=<<9-5=4>>4

# Answer

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Question:
The area of square A is 25. The area of square B is 81. What's the length difference between the sides of square A and B?
Answer:
Let's think step by step.

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4
The area of square A is 25. The area of square B is 81. What's the length difference between the sides of square A and B?
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