Area of a Circle = (pi)(r^2)
Diameter = 2r
If the diameter of the circle is 12, then the radius has to be 6.
If the area of a circle is pi times the square of the radius, and the square of 6 is 36 (6x6), then the area of the circle is 36pi.
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The circumference and area of a circle with a 17 ft diameter are:C = 53.4 ftA = 227 ft2
Divide the diameter by 2 to get the radius. Then use the standard formula for the area of a circle.
201.06ft2
Radius = diameter ÷ 2 Area = π x radius2 = π x (12 ÷ 2)2 = 36π ≈ 113 sq ft.
The area is 50.3 square feet.