The circumference is about 40.84 units.
Chat with our AI personalities
Circumference = pi*13 yards
The circumference of a 13-foot diameter circle is: ~40.84 ft
2 x 13 x pi = 81.68 Circumference of a circle = 2*pi*radius or pi*diameter Circumference = 2*pi*13 = 81.68140899
If the diameter of a circle is 9 the circumference is: 28.3
If a circle has a diameter of 5 the circumference is: 31.4