Its area is 49 square inches.
"784 inches area" is meaningless. If the area is 784 SQUARE inches, then each side of the square is 28 inches long.
615.75 square inches.
If the area of a circle is about 28 square inches the diameter of the circle is: about 6 inches (5.971).
The diameter is 5.97 inches.
If the perimeter of a square is 28 inches the area is: 49 square inches.
Its area is 49 square inches.
A = 49 square inches.
49 Square inches
If square has a 28-inch perimeter its area is: 49 square inches.
"784 inches area" is meaningless. If the area is 784 SQUARE inches, then each side of the square is 28 inches long.
615.75 square inches.
If the area of a circle is about 28 square inches the diameter is: about six inches (5.971).
If the area of a circle is about 28 square inches the diameter of the circle is: about 6 inches (5.971).
You seem to look after an area in square millimeters. 28 inches times 158 inches are 4424 square inches. 4424 square inches are 2854187.84 square millimeters.
The area of a circle with the diameter of 28 inches is: 615.8 square inches OR 4.28 square feet.
The diameter is 5.97 inches.