22' x 3.1416 = 69.1'
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Circumference = 7*pi which is about 22 inches
14 inches diameter x 22/7 = 44 inches circumference.
The diameter of a 22 circumference circle is: 7
The circumference of a 7 cm circle is: 21.99 cm(diameter x pi = circumference).
The ratio of the circumference of a circle to its diameter is know as PI. PI = 3.14159* = 22/7* This basically means that the circumference of a circle is a little over 3 times the length of the diameter. *Note that PI has an infinite amount of digits following it.