The diameter of a 26 x 2 bike wheel is approximately 26 inches.
It is: 26/2 = 13 inches
The radius will be half the diameter which is 20/2 = 10 inches
The recommended tire size for a 26 x 2 bike tire is 26 inches in diameter and 2 inches in width.
Assuming this question does not want to account for the axel of the wheel, or the rim around the wheel, we know that the spoke is equal to the radius of the wheel. And we know that the radius is equal to 1/2 times the diameter. So, 2(r) = d 2(26) = 52. So, the diameter is 52 cm long.
Circumference is diameter times Pi, so diameter is circumference divided by Pi. Now you do the math. That would make it 16.
We've already had this question. If this is about a real bike it can't be answered, as the spokes never go to the precise center of the wheel. If this is about maths, then basic geometry states that circumference = diameter times pi. A spoke would be the radius, which is half of the diameter. Pi is usually held at 3.14, but the numbers just keeps coming. Circumference / Pi = diameter Diameter / 2 = radius Now do the rest of the homework yourself.
A bike
Oh, dude, the radius of a wheel is just half of the diameter, so you take 27.6cm and divide by 2 to get 13.8cm. Like, that's the distance from the center to the outer edge. But hey, who's measuring anyway, right?
The Radius of circle is half of its diameter . 27.6/2=13.8
It is: 26/2 = 13 cm
area = π x (diameter ÷ 2)2 = π x (26 ÷ 2)2 = 169π ~= 531 sq ft.
Radius of the wheel: 24/2 = 12 inches