The area of a circle can be found with the formula (pi)r2. Since r = d/2, r would be 8in in this case.
A = 64pi in2, or 201.1in2
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The area of a circle with a diameter of 16 inches is: 201.1 square inches.
A 16-inch circle has an area of 201.06 square inches.
If its area is 16*pi square inches then its radius is 4 inches and its diameter is 8 inches
Area = 201.06 in2
Diameter = 32 inches, hence radius = 16 inches Area of circle = pi x r x r = 3.1415 x 16 x 16 = 804.224 square inches