Area of a circle = pi x r(squared)
Area = 2.1415927 x 8 (squared)
Area = 2.1415927 x 64
Area = 137.06 inches
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Radius of a circle = 1/2 of the diameter.Area of a circle = (pi) x (radius)2For the diameter of 16 inches, radius = 8 inches, and area = (pi) (8)2 = 201.062 square inches (rounded)
Area of the circle in square inches = pi*82
Using 3.14 as Pi the area of circle is: 200.96
Radius of circle: 16/2 = 8 inches
8 inches; the diameter of a circle is twice its radius.