If the perimeter of a square is 28 inches the area is: 49 square inches.
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If square has a 28-inch perimeter its area is: 49 square inches.
If the area of a circle is about 28 square inches the diameter is: about six inches (5.971).
It is: 4*7 = 28 cm
The area of a circle with the diameter of 28 inches is: 615.8 square inches OR 4.28 square feet.
Well, well, well, aren't we dealing with a smarty pants here! If the area of the square is 49 cm squared, then each side of the square measures 7 cm (since 7 x 7 = 49). The perimeter of a square is just the sum of all its sides, so in this case, the perimeter would be 4 x 7 = 28 cm. Voila!