60 inches (it would be a rectangle 3 by 27) 36inches (it would be a rectangle 9 by 9)
parameter is 30 means side are 3 and 27
Two rectangles can have the same area of 81 square inches but different perimeters. Rectangle 1 can have a perimeter of 36 inches with dimensions 9 inches by 9 inches, while Rectangle 2 can have a perimeter of 60 inches with dimensions 3 inches by 27 inches.
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