The length of the side of a small squares is 80m. The length of the side of a big square is 20m more then the small square. Find the perimeter of the big square.
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Solution
Given, the length of the side of a small square is 80m and the length of the side of a big square is 20m more then the small square.
Then the side of the big square is 80+20=100 m.
Then the perimeter of the big square is 4×100=400 m.