mark the tyre sidewall with chalk at bdc
mark the road at the same point
roll the tyre ten times
mark the road
measure and divide by ten
gives a good average for the circumference
The tire's radius is 23.9 inches.
Diameter = Circumference/pi
Circumference = π * Diameter
If you know the circumference of a circle, you can find the radius by dividing the circumference by the value of Pi (3.14159...)
Divide the circumference by PI (3,14159...)
circumference of the tire.
To determine how far a tire travels after rotating 150 times, you need to know the tire's circumference. The circumference can be calculated using the formula (C = 2\pi r), where (r) is the radius of the tire. Once the circumference is known, multiply it by 150 to find the total distance traveled. For example, if the tire has a circumference of 2 meters, it would travel 300 meters after 150 rotations.
C=mc2
The equation for circumference is Pi(diameter), so the exact value of the circumference of a tire with a 29 inch diameter is 29pi.
The diameter of this size tire is 24.9 inches and the circumference is 78.3 inches.
Circumference will equal diameter times pi. Multiply the diameter by 3.14
The tire's radius is 23.9 inches.
Assume the tire has the shape of the circle, in that case, you just multiply the radius by 2 x pi to get the circumference.
Circumference = 2*pi*radius or diameter*pi
The diameter is 29" as the name suggests. To find the circumference, take diameter x Pi. about 91.1 inches If you want to set up a bike computer, better do a roll out test.
The circumference of each tire would be 3pi feet, or about 9.4 ft
28" bicycle tires comes in different widths, which affects the circumference together with how hard they're inflated. In actual life even the weight on the wheel will affect the working circumference as tha tire will squash a bit under load. But ignoring all that the circumference is about 2.2 meters.