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Solving math problems online is free.
You can't find the area, you can only find the perimeter (right? )

Assume that the length of the original rectangle is x cm and the width is y cm.

Then you can get the answer from the question.

(x+3)(y+3)-xy=75

That is, 3(x+y)+9=75.

That is, x+y=22.

The circumference of the original rectangle = 2 (x+y) = 44cm.

So, the circumference of the rectangle is 44 cm.