Bicycle Wheels

The diameter of one bicycle wheel is 28 inches and its spokes run from the hub (or center) to the edge of the rim. The diameter of another bicycle wheel 21 inches. What is the difference in inches between the length of the spokes of the two wheels?

Except for the fact that spokes don't quite work like this, it appears the intent is to note that Spoke Length = (1/2)*Diameter = Radius.

ok

Great tip.