pi*radius2 = 1693.14 square inches
Make the radius the subject of the above then double for the diameter
diameter = 46.430 inches to 3 decimal places
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The area of a circle whose diameter is 18 inches is: 254.5 square inches.
346.36 square MM.
Area = pi*24.52 square mm
A circle whose diameter is 2 inches has an area of 'pi' square inches.3.142 in2 (rounded)
The area of a circle whose diameter is 3 feet, is 7.07 sq feet.