Circumference of circle: 15*pi = 47.124 cm rounded to 3 decimal places
Area of circle: pi*7.5 squared = 176.715 square cm rounded to 3 decimal places
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The diameter of a circle with a circumference of 15 centimeters is about 4.775 cm
The radius of a circle is 1/2 of its diameter. If the diameter is 15 meters, then the radius is 7.5 meters.
7.5Radius of circle: 15/2 = 7.5 cm
Circumference of the circle: 15 times pi = 47.1238898 meters
15 pi feet