approx 2463m squared
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Diameter = 28 m => radius = 28/2 m = 14 metres. Then, area = pi*r2 = 615.75 sq metres.
Area = 22/7*32 = 28.'285714' square meters and the decimals repeated
Area = pi*r2 where r is the radius. So Area = 28 sq inches gives radius = 2.985 inches and then, diameter = 2*radius = 5.971 inches.
Let the radius of the circle be r [m]. area of the circle = pi * r^2 circumference = 2 * pi * r given: pi * r^2 = 28 [m^2] Therefore, r = square root of (28/pi) = 2.99 [m]. circumference = 2 * pi * 2.99 = 18.76 [m]
The diameter of a 28-square inch circle is: 5.971 inches.