A circle's circumference is pi times its diameter (more commonly 2*pi*radius) so 7.5 times pi equals 23.56 inches.
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The area of a circle with a diameter of 75 inches is: 4,418 square inches.
23.87 inches.
11.93662073 inches
Using 3.14 as Pi the area of circle is: 0.44156249999999997
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