A circle is defined by only one measure, ot two, as in this question.
Chat with our AI personalities
The circumference of a circle that is 9 cm wide is: 28.274 cm
A circle with a radius of 9 inches has a circumference of 56.55 inches and a diameter of 18 inches.
A circle with a radius (d/2) of 9 meters has a circumference of 56.5 meters.
If: pi*radius2 = 81*pi sq ft Then: radius = 9 feet Circumference = 2*pi*9 = 56.549 feet rounded to 3 decimal places
Circumference = 2Π• radius 2Π•9 = (18×Π)"≈ 56.5"